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Sapphire Windows

 

These lenses are suitable for high power, high-pressure applications, and vacuum or corrosive atmospheres. Sapphire is a single crystal form of alumina, Al2O3. The material is extremely hard and resistant to attack by strong acids. It has high compressive strength, a high melting point, and excellent thermal conductivity. Transmission range is from 150 nm to 5 µm.

Sapphire windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are present. Sapphire, a single crystal form of Al2O3, is resistant to attack by strong acids. It has high compressive strength and a high melting point.

Alpha  Optics’ sapphire windows feature low distortion, low scatter, and excellent parallelism for laser and non-laser applications.

 

Specifications:
Material: Sapphire crystal
Orientation: Random
Diametre Tolerance: +0.0, -0.15mm
Thickness Tolerance: +/-0.2mm
Clear Aaperture: >85% of diametre
Parallelism: <1 arc minute(Standard), <10 arc seconds(Precision)Surface
Surface Quality: 60-40 scratch and dig
Flatness: λ/4 @632.8nm(Standard), λ/10 @632.8nm(Precision)
Bevel: 0.25mmx45deg