Sapphire window

Sapphire Windows are manufactured from single crystal sapphire, making them ideal for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. Sapphire is the second hardest crystal next to diamonds and, because of their structural strength, sapphire windows can be made much thinner than other common dielectric windows with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3) and is useful in a transmission range from 0.15 - 5.5µm.

Key features:

  • Extreme Surface Hardness Chemical Resistance
  • Transmits Wavelengths Ranging From UV to Mid-Infrared
  • Thinner and Stronger than Standard Glass Windows
  • Big size available

 

Technical capability

Material:

Optical grade sapphire (Al2O3)

Orientation:

According to requirement

Diameter:

2 - 300mm

Diameter tolerance:

+0/-0.1mm

Thickness:

  1. 50mm

Thickness Tolerance:

± 0.05mm    

Clear aperture:

90% of the diameter

Surface quality:

40-20

Surface accuracy:

λ/2   

Parallelism:

< 3 minutes



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