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CVD ZnSe Schmidt Prism With Polycrystalline Crystal Structure

Categories Infrared Prism
Brand Name: Wuhan Siwer Optics
Place of Origin: Wuhan,China
MOQ: 4 pieces
Price: 1200 USD/piece
Payment Terms: T/T, Western Union
Supply Ability: 300 pieces/month
Delivery Time: 5-7weeks
Packaging Details: 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler
Material: CVD Zinc Selenide
Size tolerance: +/-0.1mm
Chamfer: 0.2-0.5mm
Surface quality: 60/40
Surface flatness: Lambda/2 in 25.4mm
Angle tolerance: 6 arc min
Standard coating: Customized
Size range: 5-150mm
Usage: Infared system
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CVD ZnSe Schmidt Prism With Polycrystalline Crystal Structure

CVD ZnSe Schmidt Prism

Zinc Sulphide (ZnS) is a widely used IR transmitting material in windows, lenses and prisms. The material transmits at about 50% between 0.4 -12μm before dropping off to zero transmission around 15μm. Its low absorbance in the IR spectrum makes it desirable for CO2 lasers operating at 10.6μm. Zinc Sulphide has a pale yellow to clear appearance and a hardness of HK160. Although the material is resistant to thermal shock, it is not recommended for harsh environments.



Optical Properties of ZnSe Prisms

MaterialCVD Zinc Selenide
Diameter Tolerance+0.0/-0.1 mm
Thickness Tolerance±0.1 mm
Surface Quality40/20 Scratch-Dig
Surface Flatness
(Plano Side)
λ/2 at 633nm
Surface Irregularity
(Peak to Valley)
λ/4 at 633nm
Angle tolerance3 arcmin (5 seconds according to customer requirements)



Transmittance of ZnSe window(T=2mm)


CVD ZnSe properties


Chemical FormulaZnSe
Molecular Weight144.33
Crystal ClassCubic, hexagonal
Crystal StructurePolycrystalline
Density, g/cm3 at 293 K5.27
Melting Temperature, K1790
Thermal Conductivity, W/(m K) at 300 K18
Thermal Expansion, 1/K 
at 173 K5.6 x 10-6
at 273 K7.1 x 10-6
at 473 K8.3 x 10-6
Specific Heat, cal/(g K) at 296 K0.081
Debye Temperature, K246
Bandgap, eV2.7
Solubility in water at 298 K0.001 g/100 g H2O
Knoop Hardness, kg/mm2(100 g load)105
Young's Modulus, GPa70
Bulk Modulus, GPa40
Poisson's Ratio0.28

Production Line



Infrared Elements Selection Guide


Product Tags:

right angle prism

  

ir prism

  
Quality CVD ZnSe Schmidt Prism With Polycrystalline Crystal Structure wholesale
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