{"title":"Optical Filters","description":"\u003cp\u003eOptical filters for ultrafast laser applications: ND, bandpass, longpass, and shortpass filters.\u003c\/p\u003e","products":[{"product_id":"k9-bandpass-filter-25-4mm-515nm-od3","title":"K9 Bandpass Filter, Ø25.4 mm, 515 nm, OD 3.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eBandpass filters are precision optical components designed to selectively transmit light within a specific wavelength band while effectively blocking all other wavelengths. Built with interference thin-film technology, they deliver high in-band transmission and strict spectral selectivity for spectroscopy, laser systems, and imaging. Narrow bandpass filters offer passbands typically in the 1–10 nm range, making them ideal where precise center-wavelength (CWL) and bandwidth (FWHM) control is required — laser line selection, fluorescence excitation, and laser spectroscopy.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFemtosecond \/ picosecond laser systems\u003c\/li\u003e\n  \u003cli\u003eFluorescence microscopy (excitation selection)\u003c\/li\u003e\n  \u003cli\u003eLaser spectroscopy \u0026amp; spectral analysis\u003c\/li\u003e\n  \u003cli\u003eQuantum optics \u0026amp; precision imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e K9\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Dielectric Coating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 515 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 3.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e 80%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-1200 nm, T=80%@515 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 20-10 S-D\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter tolerance:\u003c\/strong\u003e +0.0\/-0.2 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the coating.\u003c\/p\u003e\n","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48189629104282,"sku":"O-NBPF-25.4-BL507","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664685-bandpass-filter.png?v=1780450193"},{"product_id":"uvfs-narrow-bandpass-filter-25-4mm-800nm-od4","title":"UVFS Narrow Bandpass Filter, Ø25.4 mm, 800 nm, OD\u003e4.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eBandpass filters are precision optical components designed to selectively transmit light within a specific wavelength band while effectively blocking all other wavelengths. Built with interference thin-film technology, they deliver high in-band transmission and strict spectral selectivity for spectroscopy, laser systems, and imaging. Narrow bandpass filters offer passbands typically in the 1–10 nm range, making them ideal where precise center-wavelength (CWL) and bandwidth (FWHM) control is required — laser line selection, fluorescence excitation, and laser spectroscopy.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFemtosecond \/ picosecond laser systems\u003c\/li\u003e\n  \u003cli\u003eFluorescence microscopy (excitation selection)\u003c\/li\u003e\n  \u003cli\u003eLaser spectroscopy \u0026amp; spectral analysis\u003c\/li\u003e\n  \u003cli\u003eQuantum optics \u0026amp; precision imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e UVFS Corning 7980 0F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e IAD Hard Coating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 800 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e \u0026gt;4.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e \u0026gt;70%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 770–830 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–770 \u0026amp; 830–1200 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-770\u0026amp;830-1200 nm, T=70%-85%@800 nm ±30 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/10 @ 633 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 20-10 S-D\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter tolerance:\u003c\/strong\u003e +0.0\/-0.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness tolerance:\u003c\/strong\u003e ±0.2 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the coating.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48189807231130,"sku":"O-NBPF-25.4-2.0-BL539","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664685-bandpass-filter_5bfbe583-2125-4b1a-9f87-1fd0f809a2cd.png?v=1780450575"},{"product_id":"uvfs-narrow-bandpass-filter-25-4mm-1025nm-od4","title":"UVFS Narrow Bandpass Filter, Ø25.4 mm, 1025 nm, OD\u003e4.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eBandpass filters are precision optical components designed to selectively transmit light within a specific wavelength band while effectively blocking all other wavelengths. Built with interference thin-film technology, they deliver high in-band transmission and strict spectral selectivity for spectroscopy, laser systems, and imaging. Narrow bandpass filters offer passbands typically in the 1–10 nm range, making them ideal where precise center-wavelength (CWL) and bandwidth (FWHM) control is required — laser line selection, fluorescence excitation, and laser spectroscopy.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFemtosecond \/ picosecond laser systems\u003c\/li\u003e\n  \u003cli\u003eFluorescence microscopy (excitation selection)\u003c\/li\u003e\n  \u003cli\u003eLaser spectroscopy \u0026amp; spectral analysis\u003c\/li\u003e\n  \u003cli\u003eQuantum optics \u0026amp; precision imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e UVFS Corning 7980 0F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e IAD Hard Coating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 6.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 1025 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e \u0026gt;4.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e 70%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 1020–1030 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–1020 \u0026amp; 1030–1200 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-1020\u0026amp;1030-1200 nm, T=70%@1025 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/10 @ 633 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 20-10 S-D\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter tolerance:\u003c\/strong\u003e +0.0\/-0.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness tolerance:\u003c\/strong\u003e ±0.2 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the coating.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48189808640154,"sku":"O-NBPF-25.4-6.0-BL540","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664685-bandpass-filter_36cb8a14-e863-4ff3-8051-3c7baf405849.png?v=1780450582"},{"product_id":"uvfs-narrow-bandpass-filter-25-4x12-7mm-1025nm-od4","title":"UVFS Narrow Bandpass Filter, 25.4 × 12.7 mm, 1025 nm, OD\u003e4.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eBandpass filters are precision optical components designed to selectively transmit light within a specific wavelength band while effectively blocking all other wavelengths. Built with interference thin-film technology, they deliver high in-band transmission and strict spectral selectivity for spectroscopy, laser systems, and imaging. Narrow bandpass filters offer passbands typically in the 1–10 nm range, making them ideal where precise center-wavelength (CWL) and bandwidth (FWHM) control is required — laser line selection, fluorescence excitation, and laser spectroscopy.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFemtosecond \/ picosecond laser systems\u003c\/li\u003e\n  \u003cli\u003eFluorescence microscopy (excitation selection)\u003c\/li\u003e\n  \u003cli\u003eLaser spectroscopy \u0026amp; spectral analysis\u003c\/li\u003e\n  \u003cli\u003eQuantum optics \u0026amp; precision imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e UVFS Corning 7980 0F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e IAD Hard Coating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 25.4 × 12.7 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 6.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 1025 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e \u0026gt;4.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e 70%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 1020–1030 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–1020 \u0026amp; 1030–1200 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-1020\u0026amp;1030-1200 nm, T=70%@1025 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/10 @ 633 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 20-10 S-D\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter tolerance:\u003c\/strong\u003e +0.0\/-0.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness tolerance:\u003c\/strong\u003e ±0.2 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the coating.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48189817454746,"sku":"O-NBPF-25.4x12.7-6.0-BL541","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664685-bandpass-filter_45029697-68c4-4576-808d-f47db804fb2a.png?v=1780450590"},{"product_id":"uvfs-narrow-bandpass-filter-38-1x12-7mm-1025nm-od4","title":"UVFS Narrow Bandpass Filter, 38.1 × 12.7 mm, 1025 nm, OD\u003e4.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eBandpass filters are precision optical components designed to selectively transmit light within a specific wavelength band while effectively blocking all other wavelengths. Built with interference thin-film technology, they deliver high in-band transmission and strict spectral selectivity for spectroscopy, laser systems, and imaging. Narrow bandpass filters offer passbands typically in the 1–10 nm range, making them ideal where precise center-wavelength (CWL) and bandwidth (FWHM) control is required — laser line selection, fluorescence excitation, and laser spectroscopy.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFemtosecond \/ picosecond laser systems\u003c\/li\u003e\n  \u003cli\u003eFluorescence microscopy (excitation selection)\u003c\/li\u003e\n  \u003cli\u003eLaser spectroscopy \u0026amp; spectral analysis\u003c\/li\u003e\n  \u003cli\u003eQuantum optics \u0026amp; precision imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e UVFS Corning 7980 0F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e IAD Hard Coating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 38.1 × 12.7 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 6.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 1025 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e \u0026gt;4.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e 70%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 1020–1030 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–1020 \u0026amp; 1030–1200 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-1020\u0026amp;1030-1200 nm, T=70%@1025 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/10 @ 633 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 20-10 S-D\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter tolerance:\u003c\/strong\u003e +0.0\/-0.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness tolerance:\u003c\/strong\u003e ±0.2 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the coating.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48189819322522,"sku":"O-NBPF-38.1x12.7-6.0-BL542","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664685-bandpass-filter_e3a7f57d-9a7f-4d36-8bb5-947cf8df7ddf.png?v=1780450598"},{"product_id":"silicon-reflective-longpass-filter-12-5mm-1050nm-od3","title":"Silicon Reflective Longpass Filter, Ø12.5 mm, 1050 nm, OD 3.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eLongpass filters provide a sharp cut-on at a specific wavelength. Widely used for order sorting, they isolate broad spectral regions while transmitting the desired energy and blocking unwanted light. Built on an IR-transmitting optical substrate coated with a hard, durable outer-surface dielectric film, they withstand routine cleaning and suit any high-quality optical assembly — making them especially well suited to FTIR spectroscopy and thermal imaging. Coatings are available on silicon or germanium substrates.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFTIR spectroscopy\u003c\/li\u003e\n  \u003cli\u003eThermal imaging\u003c\/li\u003e\n  \u003cli\u003eOrder sorting \u0026amp; spectral-region isolation\u003c\/li\u003e\n  \u003cli\u003eMid-IR \u0026amp; laser systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Silicon\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Dielectric Coating (reflective longpass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø12.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 1.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 1050 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 3.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e \u0026gt;85%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–1050 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 1100–2100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-1050 nm, T\u0026gt;85%@1150 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e 90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e \u0026lt;10 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e 3–5 λ @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the coating.\u003c\/p\u003e\n","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48192975962266,"sku":"O-LPF-12.5-1.0-BL508","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664687-longpass-main.png?v=1780463658"},{"product_id":"uvfs-reflective-longpass-filter-25-0mm-950nm-od5","title":"UVFS Reflective Longpass Filter, Ø25.0 mm, 950 nm, OD\u003e5.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eHard-coated reflective longpass filters deliver sharp cut-on performance with optical density \u0026gt;5 in the blocking band and high transmission across the passband. Built on a UV fused silica substrate with a durable hard dielectric coating — essentially a modified quarter-wave stack that isolates the band by interference — they offer excellent environmental stability and long service life from a single substrate, and withstand the normal cleaning and handling of any high-quality optical component.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFluorescence \u0026amp; Raman spectroscopy\u003c\/li\u003e\n  \u003cli\u003eLaser-line \/ excitation rejection\u003c\/li\u003e\n  \u003cli\u003eSpectral band isolation\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; laser systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e UV Fused Silica\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Hard Coating (reflective longpass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 950 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e \u0026gt;5.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–938 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 962–2150 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-938 nm, T\u0026gt;90%@950 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e 21.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 40-20 Scratch-Dig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/4 @ 633 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Black anodized aluminum ring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall thickness (housed):\u003c\/strong\u003e 3.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLaser damage threshold:\u003c\/strong\u003e 0.25 J\/cm² (1064 nm, 10 ns, 10 Hz, Ø1.010 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48193086587034,"sku":"O-LPF-25.0-2.0-BL509","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664688-longpass-main.png?v=1780464221"},{"product_id":"uvfs-reflective-longpass-filter-25-0mm-1000nm-od5","title":"UVFS Reflective Longpass Filter, Ø25.0 mm, 1000 nm, OD\u003e5.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eHard-coated reflective longpass filters deliver sharp cut-on performance with optical density \u0026gt;5 in the blocking band and high transmission across the passband. Built on a UV fused silica substrate with a durable hard dielectric coating — essentially a modified quarter-wave stack that isolates the band by interference — they offer excellent environmental stability and long service life from a single substrate, and withstand the normal cleaning and handling of any high-quality optical component.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFluorescence \u0026amp; Raman spectroscopy\u003c\/li\u003e\n  \u003cli\u003eLaser-line \/ excitation rejection\u003c\/li\u003e\n  \u003cli\u003eSpectral band isolation\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; laser systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e UV Fused Silica\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Hard Coating (reflective longpass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 1000 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e \u0026gt;5.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–987 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 1013–2150 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-987 nm, T\u0026gt;90%@1000 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e 21.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 40-20 Scratch-Dig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/4 @ 633 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Black anodized aluminum ring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall thickness (housed):\u003c\/strong\u003e 3.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLaser damage threshold:\u003c\/strong\u003e 3.75 J\/cm² (1064 nm, 10 ns, 10 Hz, Ø0.516 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48193086914714,"sku":"O-LPF-25.0-2.0-BL510","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664689-longpass-main.png?v=1780464243"},{"product_id":"uvfs-reflective-longpass-filter-25-0mm-1150nm-od5","title":"UVFS Reflective Longpass Filter, Ø25.0 mm, 1150 nm, OD\u003e5.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eHard-coated reflective longpass filters deliver sharp cut-on performance with optical density \u0026gt;5 in the blocking band and high transmission across the passband. Built on a UV fused silica substrate with a durable hard dielectric coating — essentially a modified quarter-wave stack that isolates the band by interference — they offer excellent environmental stability and long service life from a single substrate, and withstand the normal cleaning and handling of any high-quality optical component.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFluorescence \u0026amp; Raman spectroscopy\u003c\/li\u003e\n  \u003cli\u003eLaser-line \/ excitation rejection\u003c\/li\u003e\n  \u003cli\u003eSpectral band isolation\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; laser systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e UV Fused Silica\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Hard Coating (reflective longpass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 1150 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e \u0026gt;5.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–1136 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 1164–2150 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-1136 nm, T\u0026gt;90%@1150 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e 21.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 40-20 Scratch-Dig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/4 @ 633 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Black anodized aluminum ring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall thickness (housed):\u003c\/strong\u003e 3.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48193087307930,"sku":"O-LPF-25.0-2.0-BL511","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664690-longpass-main.png?v=1780464259"},{"product_id":"uvfs-reflective-longpass-filter-25-0mm-1200nm-od5","title":"UVFS Reflective Longpass Filter, Ø25.0 mm, 1200 nm, OD\u003e5.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eHard-coated reflective longpass filters deliver sharp cut-on performance with optical density \u0026gt;5 in the blocking band and high transmission across the passband. Built on a UV fused silica substrate with a durable hard dielectric coating — essentially a modified quarter-wave stack that isolates the band by interference — they offer excellent environmental stability and long service life from a single substrate, and withstand the normal cleaning and handling of any high-quality optical component.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFluorescence \u0026amp; Raman spectroscopy\u003c\/li\u003e\n  \u003cli\u003eLaser-line \/ excitation rejection\u003c\/li\u003e\n  \u003cli\u003eSpectral band isolation\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; laser systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e UV Fused Silica\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Hard Coating (reflective longpass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 1200 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e \u0026gt;5.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–1185 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 1215–2150 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e HR@200-1185 nm, T\u0026gt;90%@1200 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e 21.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 40-20 Scratch-Dig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/4 @ 633 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Black anodized aluminum ring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall thickness (housed):\u003c\/strong\u003e 3.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48193087504538,"sku":"O-LPF-25.0-2.0-BL512","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664691-longpass-main.png?v=1780464274"},{"product_id":"og550-absorptive-longpass-filter-50-0x50-0mm-515nm-od5","title":"OG550 Absorptive Longpass Filter, 50.0 × 50.0 mm, 515 nm, OD\u003e5.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive longpass filters transmit wavelengths longer than a defined cut-on while blocking shorter spectral components — ideal for removing excitation light, suppressing scattered background, and separating spectral bands. With high transmission and strong out-of-band blocking, they maintain stable spectral performance across a range of incidence conditions, making them well suited to fluorescence detection, Raman spectroscopy, infrared optics, and laser systems.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFluorescence \u0026amp; Raman spectroscopy\u003c\/li\u003e\n  \u003cli\u003eLaser-line \/ excitation rejection\u003c\/li\u003e\n  \u003cli\u003eSpectral band isolation\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; laser systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e OG550\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated (absorptive longpass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStart wavelength:\u003c\/strong\u003e 515 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e \u0026gt;5.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransmission:\u003c\/strong\u003e 90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlocking range:\u003c\/strong\u003e 200–520 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassband:\u003c\/strong\u003e 610–2500 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e \u0026lt;2 λ @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48193087963290,"sku":"O-LPF-50.0x50.0-2.0-BL513","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664692-longpass-main.png?v=1780464288"},{"product_id":"ng11-absorptive-nd-filter-25-4mm-od1-0","title":"NG11 Absorptive ND Filter, Ø25.4 mm, OD 1.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis mounted absorptive neutral density filter carries a broadband AR coating (350–700 nm) on both surfaces, minimizing surface reflection (average R \u0026lt; 0.5% at normal incidence) to reduce stray light. It is mounted in an SM1-threaded Ø1\" lens tube compatible with cage systems and lens tubes; the cell can be removed by loosening the retaining ring. Unlike metallic ND filters, absorptive ND filters are made from Schott-family glasses with a spectrally flat absorption coefficient, delivering uniform attenuation across the visible band.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e NG11 (Schott absorptive glass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e AR Coating (BBAR, 350–700 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 1.9 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 350–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 1.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e BBAR@350-700 nm, Ravg\u0026lt;0.5%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;20 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e SM1-threaded Ø1\" lens tube (SM1L03)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall thickness (housed):\u003c\/strong\u003e 11.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 60-40 Scratch-Dig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/4 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194683338906,"sku":"O-NDF-25.4-1.9-BL514","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664693-nd-main.png?v=1780478322"},{"product_id":"ng9-absorptive-nd-filter-25-4mm-od3-0","title":"NG9 Absorptive ND Filter, Ø25.4 mm, OD 3.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis mounted absorptive neutral density filter carries a broadband AR coating (350–700 nm) on both surfaces, minimizing surface reflection (average R \u0026lt; 0.5% at normal incidence) to reduce stray light. It is mounted in an SM1-threaded Ø1\" lens tube compatible with cage systems and lens tubes; the cell can be removed by loosening the retaining ring. Unlike metallic ND filters, absorptive ND filters are made from Schott-family glasses with a spectrally flat absorption coefficient, delivering uniform attenuation across the visible band.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e NG9 (Schott absorptive glass)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e AR Coating (BBAR, 350–700 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 350–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 3.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating spec:\u003c\/strong\u003e BBAR@350-700 nm, Ravg\u0026lt;0.5%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;20 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e SM1-threaded Ø1\" lens tube (SM1L03)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall thickness (housed):\u003c\/strong\u003e 11.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 60-40 Scratch-Dig\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/4 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194695495834,"sku":"O-NDF-25.4-2.1-BL515","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664694-nd-main.png?v=1780478338"},{"product_id":"absorptive-nd-filter-25-4mm-od0-2","title":"Absorptive ND Filter, Ø25.4 mm, OD 0.2","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194696839322,"sku":"O-NDF-25.4-2.0-BL516","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664695-nd-main.png?v=1780478353"},{"product_id":"absorptive-nd-filter-25-4mm-od0-4","title":"Absorptive ND Filter, Ø25.4 mm, OD 0.4","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194697658522,"sku":"O-NDF-25.4-2.0-BL517","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664696-nd-main.png?v=1780478367"},{"product_id":"absorptive-nd-filter-25-4mm-od0-5","title":"Absorptive ND Filter, Ø25.4 mm, OD 0.5","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194698018970,"sku":"O-NDF-25.4-2.0-BL518","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664697-nd-main.png?v=1780478375"},{"product_id":"absorptive-nd-filter-25-4mm-od0-8","title":"Absorptive ND Filter, Ø25.4 mm, OD 0.8","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194698412186,"sku":"O-NDF-25.4-2.0-BL519","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664698-nd-main.png?v=1780478383"},{"product_id":"absorptive-nd-filter-25-4mm-od1-0","title":"Absorptive ND Filter, Ø25.4 mm, OD 1.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 1.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194698444954,"sku":"O-NDF-25.4-2.0-BL520","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664699-nd-main.png?v=1780478391"},{"product_id":"absorptive-nd-filter-25-4mm-od2-0","title":"Absorptive ND Filter, Ø25.4 mm, OD 2.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Ø25.4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 2.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194699067546,"sku":"O-NDF-25.4-2.0-BL521","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664700-nd-main.png?v=1780478399"},{"product_id":"absorptive-nd-filter-50x50mm-od0-2","title":"Absorptive ND Filter, 50.0 × 50.0 mm, OD 0.2","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194699133082,"sku":"O-NDF-50.0x50.0-2.0-BL522","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664701-nd-main.png?v=1780478407"},{"product_id":"absorptive-nd-filter-50x50mm-od0-4","title":"Absorptive ND Filter, 50.0 × 50.0 mm, OD 0.4","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194699231386,"sku":"O-NDF-50.0x50.0-2.0-BL523","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664702-nd-main.png?v=1780478424"},{"product_id":"absorptive-nd-filter-50x50mm-od0-5","title":"Absorptive ND Filter, 50.0 × 50.0 mm, OD 0.5","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194699788442,"sku":"O-NDF-50.0x50.0-2.0-BL524","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664703-nd-main.png?v=1780478437"},{"product_id":"absorptive-nd-filter-50x50mm-od0-8","title":"Absorptive ND Filter, 50.0 × 50.0 mm, OD 0.8","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194700804250,"sku":"O-NDF-50.0x50.0-2.0-BL525","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664704-nd-main.png?v=1780478451"},{"product_id":"absorptive-nd-filter-50x50mm-od1-0","title":"Absorptive ND Filter, 50.0 × 50.0 mm, OD 1.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 1.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194700837018,"sku":"O-NDF-50.0x50.0-2.0-BL526","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664705-nd-main.png?v=1780478461"},{"product_id":"absorptive-nd-filter-50x50mm-od2-0","title":"Absorptive ND Filter, 50.0 × 50.0 mm, OD 2.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 2.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194701688986,"sku":"O-NDF-50.0x50.0-2.0-BL527","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664706-nd-main.png?v=1780478475"},{"product_id":"absorptive-nd-filter-50x50mm-od3-0","title":"Absorptive ND Filter, 50.0 × 50.0 mm, OD 3.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eAbsorptive neutral density filters use neutral absorbing glass (NG-series colored glass) as the substrate, achieving uniform attenuation through broadband bulk absorption with nearly wavelength-independent behavior across the visible range — reducing intensity while preserving the original spectral shape. Simple, stable, and cost-effective, they are often paired with a double-sided AR coating to lower surface reflection and raise effective transmission. Widely used for imaging brightness control, optical measurement, detector protection, and laboratory intensity adjustment.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eBroadband beam attenuation\u003c\/li\u003e\n  \u003cli\u003eLaser power \/ intensity control\u003c\/li\u003e\n  \u003cli\u003eImaging \u0026amp; detector protection\u003c\/li\u003e\n  \u003cli\u003eOptical measurement \u0026amp; illumination control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e Neutral Absorbing Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–700 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 3.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194702082202,"sku":"O-NDF-50.0x50.0-2.0-BL528","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664707-nd-main.png?v=1780478505"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od0-1","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 0.1","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194704081050,"sku":"O-NDF-50.0x50.0-2.0-BL529","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664708-nd-main.png?v=1780478513"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od0-2","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 0.2","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194704113818,"sku":"O-NDF-50.0x50.0-2.0-BL530","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664709-nd-main.png?v=1780478524"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od0-3","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 0.3","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194704507034,"sku":"O-NDF-50.0x50.0-2.0-BL531","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664710-nd-main.png?v=1780478533"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od0-4","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 0.4","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194704867482,"sku":"O-NDF-50.0x50.0-2.0-BL532","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664711-nd-main.png?v=1780478549"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od0-5","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 0.5","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194704900250,"sku":"O-NDF-50.0x50.0-2.0-BL533","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664712-nd-main.png?v=1780478562"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od0-8","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 0.8","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 0.8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194704933018,"sku":"O-NDF-50.0x50.0-2.0-BL534","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664713-nd-main.png?v=1780478576"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od1-0","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 1.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 1.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194704998554,"sku":"O-NDF-50.0x50.0-2.0-BL535","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664714-nd-main.png?v=1780478600"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od2-0","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 2.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 2.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194705031322,"sku":"O-NDF-50.0x50.0-2.0-BL536","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664715-nd-main.png?v=1780478609"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od3-0","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 3.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 3.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194705064090,"sku":"O-NDF-50.0x50.0-2.0-BL537","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664716-nd-main.png?v=1780478635"},{"product_id":"h-k9l-reflective-nd-filter-50x50mm-od4-0","title":"H-K9L Reflective ND Filter, 50.0 × 50.0 mm, OD 4.0","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eReflective neutral density filters use high-quality K9 (BK7-equivalent) optical glass coated with a precisely controlled metallic reflective film (e.g. protected silver or aluminum). Attenuation is achieved primarily by reflection rather than bulk absorption, so absorbed energy is minimal — greatly reducing heating and thermal-lensing and yielding a higher laser-induced damage threshold. This makes them especially suitable for CW, high-power, and ultrafast laser systems. The broadband metallic coating (400–1100 nm) provides flat spectral attenuation across the visible to near-infrared.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCW \u0026amp; high-power laser attenuation\u003c\/li\u003e\n  \u003cli\u003eUltrafast laser power balancing\u003c\/li\u003e\n  \u003cli\u003eEnergy calibration \u0026amp; beam sampling\u003c\/li\u003e\n  \u003cli\u003eDetector protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eConstruction \u0026amp; Performance\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate:\u003c\/strong\u003e H-K9L (BK7-equivalent)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Metallic Coating (HR@400-1100 nm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 50.0 × 50.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 2.0 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpectral range:\u003c\/strong\u003e 400–1100 nm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOD:\u003c\/strong\u003e 4.0\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e \u0026gt;90%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallelism:\u003c\/strong\u003e 5 arcmin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface quality:\u003c\/strong\u003e 80-50\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface flatness:\u003c\/strong\u003e λ\/2 @ 633 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eStorage \u0026amp; Handling\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, store and use at 25 °C and 40–60% relative humidity. If the surface becomes contaminated, clean gently with ≥99% alcohol and lint-free lens tissue; never use coarse cloth, water, or abrasive cleaners, which may damage the optic.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":48194705096858,"sku":"O-NDF-50.0x50.0-2.0-BL538","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/664717-nd-main.png?v=1780478647"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/collections\/664693-nd-main_4adb5e0b-4e09-4a9b-b9df-4e09a464467a.png?v=1780536820","url":"https:\/\/waveqvanta.com\/collections\/wq-ultrafast-optics-optical-filters.oembed","provider":"WaveQuanta","version":"1.0","type":"link"}