With its low absorption at IR wavelengths and visible transmission ZnSe based components including windows, output couplers, prisms and lenses are widely used especially for high power IR laser.
Physical and Optical Properties:
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Growing Method
|
Chemical Vapor Deposition(CVD)
|
|
Melting Point
|
1525℃
|
|
Transmission Band
|
0.6-20um
|
|
Bulk Absorption Coefficient
|
5X10-4cm-1@10.6μm
|
|
Density
|
5.268g/cm3
|
|
Refractive Index
|
2.4015 at 10.6μm
|
|
Young’s Modulus
|
67.2 GPa
|
|
Thermal Conductivity
|
0.18W/cm/℃
|
|
Specific Heat
|
0.356J/g/℃
|
|
Thermal Expansion
|
7.57x10-6/℃ at 20℃
|
Specifications:
|
Material:
|
ZnSe
|
|
Dimension Tolerance:
|
+0.0/-0.1mm
|
|
Thickness Tolerance:
|
±0.1mm
|
|
Surface quality:
|
60/40
|
|
Clear Aperture:
|
>85%
|
|
Flatness:
|
λ/2@633nm
|
|
Parallelism:
|
3'
|
