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ZnSe (Zinc Selenide)

ZnSe (Zinc Selenide)ZnSe (Zinc Selenide) is a preferred material for lenses, windows, output couplers and beam expanders for its low absorptivity at infrared wavelengths and its visible transmission. For high-power applications, it’s critical that the material bulk absorption and internal defect structure be carefully controlled, that minimum-damage polishing technology be employed, and the highest quality optical thin-film coatings are used. The material absorption is verified by CO2 laser vacuum calorimetry.


ZnSe is non-hygroscopic and chemically stable, unless treated with strong acids. It’s safe to use in most industrial, field, and laboratory environments.


ZnSe Characteristics & Transmission Curve  


ZnSe Windows Specifications:


  Material

 Zinc Selenide

  Dimension Tolerance

 +0.0/-0.1mm

  Thickness Tolerance

 ±0.1mm

  Surface Accuracy

 λ/4@632.8nm

  Surface Quality

 60-40

  Parallelism

 <1'

  Clear Aperture

 >90%

  Bevel

 <0.2×45°

  Coating

 upon request

 

  ZnSe Windows_Standard products


ZnSe Lenses Specifications:


  Material

 Zinc Selenide

  Design Wavelength

 10.6μm

  Focal Length Tolerance

 ±1%

  Diameter Tolerance

 +0.0/-0.1mm

  Thickness Tolerance

 0.2mm

  Surface Accuracy

 λ/2@632.8nm

  Surface Quality

 60-40

  Centration

 <3'

  Clear Aperture

 >80%

  Bevel

 <0.2x45°

  Coating

 AR Coating @ 8-12μm


  ZnSe Lenses_Standard Products