ZnSe Windows

ZnSe Windows
ZnSe Windows

ZnSe is an infrared optical material with a remarkably wide transmission wavelength range from visible to mid-infrared (0.45 µm to 21.5 µm) and thus is ideal for a wide variety of infrared applications including CO2 laser optics, thermal imaging, and medical systems. The good transmission at 632nm makes it possible to use a HeNe laser for alignment in an IR system.

Newlight Photpnics offers uncoated parallel ZnSe windows.  Windows with a wedge angle are available upon request. 


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Part No. Aperture Thickness Coating Price Availability Add to Cart

Specifications of ZnSe Windows:

Dimension Tolerance: ±0.1 mm
Clear Aperture: > 85% central area
Flatness: λ/2@633 nm over the clear aperture
Surface Quality: Scratch/Dig  40/20
Parallelism: better than 1 arc minute
Perpendicularity: 3 arc minutes
Bevel: < 0.25 mm X 45°


ZnSe (zinc selenide) is a hazardous material. For your safety, please always wear gloves when handling these windows and thoroughly wash your hands afterward.



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