Zinc Selenide (ZnSe) is best for use in high power Co2 laser systems due to the high resistance to thermal shock, low absorption coefficient and low dispersion. ZnSe is a relatively soft material with a Knoop Hardness of 120 and is susceptible to scratches and is not recommended for use in harsh environments.
Firebird provides these in several uncoated stock configurations but can provide customized and coated to your specifications.
Zinc Selenide (ZnSe) Specs:
|Wavelength range: 1000nm-14μm||Coating: Uncoated|
|Diameter tolerance: ±0.13mm||Surface Quality: 60/40|
|Thickness tolerance: ±0.13mm||Paralellism: <3 arc minute|
|Clear Aperture: 90%||Density: 5.27g/cm3|
|Melting point: 1516.85ºC||
Young's Modulus: (GPa): 70
|Coefficient of Thermal Expansion: 7.1 x 10-6/°C||
Knoop Hardness: 120kg/mm2