{"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","url":"https:\/\/waveqvanta.com\/products\/uvfs-reflective-longpass-filter-25-0mm-950nm-od5","provider":"WaveQuanta","version":"1.0","type":"link"}