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Home > Products > Windows > ZnSe Windows

Zinc Selenide ( ZnSe )Windows

   ZnSe-Windows      ZnSe-Windows-DWG

     Zinc Selenide (ZnSe) is a preferred material for infrared ( IR ) windows for its low absorptivity at infrared wavelength and its visible transmission.

    Creator optics (CNCO) supply high quality ZnSe windows with custom size. All of these custom made ZnSe windows are designed to be used in precision optical, CO2 laser and infrared ( IR )systems. The circumference is fine ground and both edges are no-chips beveled. At the same time, we can apply high-quality infrared optical coatings to these ZnSe Windows.

Common specifications of ZnSe Windows:

Specifications\Grade Precision Standard
Diameter Dia6mm to 150mm, customize available
Thickness 2mm to 10mm , customize available
Diameter Tolerance +0/-0.05mm +0/-0.1mm
Thickness Tolerance +/-0.05mm +/- 0.1mm
Edge fine ground fine ground
Chamfer/Bevel 0.25*45°(no-chips) 0.25*45°(no-chips)
Flatness 1/4 lambda per inch @633nm 1/2 lambda per inch @633nm
Parallelism 30 arc sec 3 arc min
Surface Qulitity 20/10 60/40
Clear Aperture >85% >85%
Coating AR coating at 10.6 microns, customize available
Material CVD ZnSe *

   * Detailed characteristics of CVD ZnSe.

Physical and optical proterties of ZnSe crystal  
Transimission Range 0.6 to 21.0 um
Refractive Index 2.4028@1.06um
Reflection Loss 0.5x10-3cm-1@10.6um
Absorption Peak 45.7um
dn/DT +61x10-6@10.6um 298K
dn/du=0 5.5um
Density 5.27 g/cc
Meliting Point 1525
Thermal Conductivity 18 W m-1 K-1 @298K
Thermal Expansion 7.1 x 10-6 /C @ 273K
Hardness Knoop 120 with 50g indenter
Specific Heat Capacity 339 J Kg-1 K-1
Dielectric Constant n/a
Youngs Modulus (E) 67.2 GPa
Shear Modulus (G) na
Bulk Modulus (K) 40GPa
Elastic Coefficients n/a
Apparent Elastic Limit 551.MPa (48000 psi)
Poisson Ratio 0.28
Solubility 0.001g/100g water
Molecular Weight 144.33
Class/Structure HIP polycrystalline cubic, ZNS, F43m

* For more information or other materials and requests, please contact us.


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