Product Description

Znse window,optical znse window:Why use znse window?ZnSe is a preferred material for lenses, windows, output couplers and beam expanders for its low absorptivity at infrared wavelengths and its visible transmission. For high-power applications, it's critical that the material bulk absorption and internal defect structure be carefully controlled, that minimum-damage polishing technology be employed, and the highest quality optical thin-film coatings are used. The material absorption is verified by CO2 laser vacuum calorimetry. ZnSe is non-hygroscopic and chemically stable, unless treated with strong acids. It's safe to use in most industrial, field, and laboratory environments.

ZnSe vs ZnSZnSe (Zinc Selenide)Best Choice for CO₂ Laser Optics (10.6 μm)ZnSe is the most widely used material for CO₂ laser windows and focusing lenses due to its low absorption at 10.6 μm and broad infrared transmission.Key AdvantagesHigh transmission from 0.6–16 μmVery low absorption at 10.6 μmSuitable for high-power CO₂ laser systemsAvailable with AR coatings optimized for 10.6 μm
ZnS (Zinc Sulfide)Strong Mechanical Material for Infrared Windows & DomesZnS, especially CVD ZnS, offers good infrared transmission and better mechanical strength than ZnSe.It is often used where environmental durability is more important than laser absorption performance.