{"product_id":"gase-gallium-selenide-nonlinear-crystal","title":"GaSe (Gallium Selenide) Nonlinear Crystal for Mid-IR SHG and THz, 0.62–20 µm","description":"\u003cdiv class=\"wq-pdp__lbtek-desc\"\u003e\n\u003cp\u003eGallium selenide (GaSe) is a layered nonlinear crystal with a d22 coefficient of 54 pm\/V and a transparency range of 0.62–20 µm. It is used for frequency doubling of mid-IR lasers such as CO2, CO and DF lasers, for up-conversion of IR radiation into the visible, for optical parametric generation and for THz generation. Because GaSe cleaves along the (001) plane and cannot be cut at arbitrary phase-matching angles, WaveQuanta supplies it as thin mounted plates, from 0.1 mm to 3 mm thick.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wq-pdp__lbtek-tips\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTransparency range 0.62–20 µm\u003c\/li\u003e\n\u003cli\u003eNonlinear coefficient d22 = 54 pm\/V\u003c\/li\u003e\n\u003cli\u003eOptical damage threshold 30 MW\/cm² at 1.064 µm (10 ns) and 28 MW\/cm² at 9.3 µm (150 ns)\u003c\/li\u003e\n\u003cli\u003eUp to 9% conversion efficiency reported for CO2 laser SHG\u003c\/li\u003e\n\u003cli\u003eTHz generation in the 0.1–4 THz range\u003c\/li\u003e\n\u003cli\u003eSoft, layered crystal (Mohs hardness 2) that cleaves along the (001) plane\u003c\/li\u003e\n\u003cli\u003ePlates are thinned layer by layer from a thicker blank; 0.2 mm is the usual minimum thickness, and 0.1 mm plates can be made without a flatness guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wq-pdp__lbtek-tips\"\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSecond-harmonic generation of CO2, CO and chemical DF (λ = 2.36 µm) lasers\u003c\/li\u003e\n\u003cli\u003eUp-conversion of CO and CO2 laser radiation into the visible range\u003c\/li\u003e\n\u003cli\u003eMid-IR pulse generation by difference-frequency mixing of Nd lasers with IR dye or F-centre lasers\u003c\/li\u003e\n\u003cli\u003eOptical parametric generation within 3.5–18 µm\u003c\/li\u003e\n\u003cli\u003eTHz (T-ray) generation, 0.1–4 THz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wq-pdp__lbtek-tips\"\u003e\n\u003ch3\u003eStandard Sizes\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eCut \/ orientation\u003c\/th\u003e\n\u003cth\u003eSurface \/ coating\u003c\/th\u003e\n\u003cth\u003eMount\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ5 × 0.2 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ5 × 0.3 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ7 × 0.2 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ7 × 0.3 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ7 × 0.5 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ7 × 0.6 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ7 × 0.8 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ7 × 1 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ7 × 2 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ7 × 3 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ8 × 0.1 mm\u003c\/td\u003e\n\u003ctd\u003eZ-cut\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ8 × 0.4 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ8 × 0.6 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eØ8 × 2 mm\u003c\/td\u003e\n\u003ctd\u003eZ-cut\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8 × 1 mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eMounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAvailability of individual sizes changes; custom sizes, cut angles and coatings are available on request.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wq-pdp__lbtek-tips\"\u003e\n\u003ch3\u003eRelated Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/zgp-zngep2-nonlinear-crystal\"\u003eZGP Crystal\u003c\/a\u003e — mid-IR OPO\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/agse-aggase2-nonlinear-crystal\"\u003eAGSe Crystal\u003c\/a\u003e — CO2 laser SHG\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bgse-baga4se7-nonlinear-crystal\"\u003eBGSe Crystal\u003c\/a\u003e — THz and mid-IR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse all: \u003ca href=\"\/collections\/wq-uo-mid-ir-crystals\"\u003eMid-IR Nonlinear Crystals\u003c\/a\u003e · \u003ca href=\"\/collections\/wq-ultrafast-optics-crystals\"\u003eNonlinear Crystals\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eModel: WQ-NLC-GASE\u003c\/strong\u003e · Custom sizes, orientations and coatings on request — contact WaveQuanta for a quote and lead time.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":68073587245210,"sku":"WQ-NLC-GASE","price":0.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/wq-gase-gallium-selenide-nonlinear-crystal-1.jpg?v=1793964894","url":"https:\/\/waveqvanta.com\/products\/gase-gallium-selenide-nonlinear-crystal","provider":"WaveQuanta","version":"1.0","type":"link"}