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Sapphire Windows

Optical windows are used to allow optical radiation to pass from one environment to another without allowing other elements of these environments to mix. And it does not change the wavelength distribution of the beam, the transmitted wavefront, nor does it scatter any of the light out of the beam.

Factory Standard – Contact us for manufacturing limit or custom specifications.

  • Material: Optical Sapphire (Al2O3)
  • Dimension: +0, -0.2mm
  • Surface Flatness: 1λ per 25 mm at 633 nm over clear aperture
  • Surface Quality: 80-50 scratch and dig, beveled edges
  • Crystal axis cut: random (c-cut available upon request)
  • Birefringence (nE-nO) 0.008 for visible light in directions orthogonal to the optic axis
  • Refractive index: 1.77 @500nm
  • Center Thickness (CT): +/-0.1
  • Parallelism: 3 arc minutes
  • Clear Aperture: 90% of diameter
  • Coating none

 

Sapphire Round Windows

Diameter(mm)Thickness(mm)
2.50.5
5.01.0
6.350.5
7.50.4
9.50.5
10.01.0
12.71.0
12.751.0
13.00.5
15.02.0
17.252.0
20.01.0
20.02.0
22.01.0
23.751.0
25.02.0
25.02.3
25.41.0
25.42.0
25.42.25
30.01.0
31.751.0
35.01.0
38.11.0
38.12.0
40.01.0
50.82.0
50.83.15
63.52.0
75.02.0


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