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CVD ZnSe Schmidt Prism With Polycrystalline Crystal Structure

Basic Information
Place of Origin: Wuhan,China
Brand Name: Wuhan Siwer Optics
Minimum Order Quantity: 4 pieces
Price: 1200 USD/piece
Packaging Details: 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler
Delivery Time: 5-7weeks
Payment Terms: T/T, Western Union
Supply Ability: 300 pieces/month
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Detail Information
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

Product Description

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.

CVD ZnSe Schmidt Prism With Polycrystalline Crystal Structure


 

Optical Properties of ZnSe Prisms

Material CVD Zinc Selenide
Diameter Tolerance +0.0/-0.1 mm
Thickness Tolerance ±0.1 mm
Surface Quality 40/20 Scratch-Dig
Surface Flatness
(Plano Side)
λ/2 at 633nm
Surface Irregularity
(Peak to Valley)
λ/4 at 633nm
Angle tolerance 3 arcmin (5 seconds according to customer requirements)

 
 


Transmittance of ZnSe window(T=2mm)

CVD ZnSe Schmidt Prism With Polycrystalline Crystal Structure

CVD ZnSe Schmidt Prism With Polycrystalline Crystal Structure


CVD ZnSe properties

 

Chemical Formula ZnSe
Molecular Weight 144.33
Crystal Class Cubic, hexagonal
Crystal Structure Polycrystalline
Density, g/cm3 at 293 K 5.27
Melting Temperature, K 1790
Thermal Conductivity, W/(m K) at 300 K 18
Thermal Expansion, 1/K  
at 173 K 5.6 x 10-6
at 273 K 7.1 x 10-6
at 473 K 8.3 x 10-6
Specific Heat, cal/(g K) at 296 K 0.081
Debye Temperature, K 246
Bandgap, eV 2.7
Solubility in water at 298 K 0.001 g/100 g H2O
Knoop Hardness, kg/mm2(100 g load) 105
Young's Modulus, GPa 70
Bulk Modulus, GPa 40
Poisson's Ratio 0.28

Production Line

CVD ZnSe Schmidt Prism With Polycrystalline Crystal Structure
 


Infrared Elements Selection Guide

CVD ZnSe Schmidt Prism With Polycrystalline Crystal Structure


 

 
 

Contact Details
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