Calcium Fluoride Single Crystal Window

Calcium fluoride is commonly used as a window material for both infrared and
ultraviolet wavelengths, since it is transparent in these regions (about 0.15
μm to 9 μm) and exhibits extremely weak birefringence. Furthermore the
material is fairly inert chemically so that these Calcium Fluoride Single
Crystal windows are not attacked.
Specifications:
Material: Calcium Fluoride single crystal ( UV or IR)
Diameter Tolerance:  +0.0, -0.1mm
Thickness Tolerance: ±0.1mm
Clear Aperture: >85%
Parallelism: 3 arc minute
Surface Quality: 60-40 scratch and dig
Wavefront Distortion: l per 25mm @633mm
Bevel: Protective ( <0.2mm x 45° )
Coating: Optional

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