Sapphire (Al2O3) Components
- the hardest of the oxide crystals
- excellent transparency and thermal properties
- chemically inert and insoluble
- can be safely made much thinner than windows from glass or other crystals
Single crystal sapphire combines excellent optical, physical and chemical properties. Chemically inert and almost insoluble, sapphire in many ways is superior material for windows. It is transparent from 150 nm up to 6 mm in the middle infrared.
Sapphire exhibits anisotropy in many optical and physical properties. Difference in index of refraction in orthogonal directions is 0.008.
Sapphire (Al2O3) Windows
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Contact us for other size, shape or precision requirements. Coatings are available on request.
Exact parameters depend on orientation of optical axis or c-axis relative to the surface.
The high index of sapphire makes magnesium fluoride almost an ideal single layer antireflection coating.
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