{"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","url":"https:\/\/waveqvanta.com\/products\/k9-bandpass-filter-25-4mm-515nm-od3","provider":"WaveQuanta","version":"1.0","type":"link"}