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Windows
 Windows are used to isolate different physical
environments whilst allowing light to pass. When selecting windows, materials,
transmission, scattering, wavefront distortion, parallelism and resistance to
certain environments should be considered. Scitec Instruments offers windows in
a wide range of different materials and with different degrees of precision.
Special materials are available upon request.
We can also provide single layer or multilayer
anti-reflecting coatings on optical windows.
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Material |
Properties |
Application |
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BK7 |
Transmission Range: 330-2100nm Refractive Index: 1.5164 @
588nm. |
Good performance over visible and near IR spectrum for most
applications. |
|
Fused silica |
Transmission Range: 185-2500nm Refractive Index: 1.4858 @
308nm. Low Thermal Expansion Coefficient: 0.54 x 10-6K. |
Better performance from UV to IR spectrum. The best choice
for resistance thermal applications. |
|
Sapphire |
Transmission Range: 180-4500nm Refractive Index: 1.755 @
1000nm. Strong hardness. |
Suitable for scratch resistant applications with better
transmission over the wide range spectrum. |
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Calcium Fluoride |
Transmission Range: 170-7800nm Refractive Index: 1.399 @
5000nm. Little Hygroscopic Susceptibility. High Thermal Expansion Coefficient:
18.85 x 10-6K. |
Wide range spectrum applications. Particularly useful for
excimer laser application. |
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