ZnSe is the most popular material for infrared applications. It is transparent from0.5 micron to 19 micron. CVD grown ZnSe has very high quality and can be used in high power IR laser. It is mainly used in CO2-laser application for its excellent imaging characteristics and high resistance to thermal shock.

Transmission Range: 500 nm~19000 nm

Thermal Expansion Coefficient: 7.6x10^-6/K

Density: 5.27g/cm³

Specifications:
Material: Zinc Selenide 
Diameter Tolerance: +0.0, -0.1mm
Thickness Tolerance:±0.2mm 
Clear Aperture: >80% 
Parallelism: 1 arc minute 
Flatness: λ/2 @ 632.8 nm 
Surface quality: 60/40 scratch and dig 
Protective Bevel: <0.25x45deg
Coating: Uncoated 

 Custom designs for other sizes and coatings are also available upon request.