Calcium Fluoride (CaF2) Windows

Optics >>> Windows >>> CaF2 Windows

Calcium Fluoride has excellent transmission in the UV, they are often used to make windows with high transmittance from below 150 nm and extending throughout the visible range.  CaF2 Windows are relatively soft and somewhat hygroscopic so polishing, coating and handling are more critical than UV Fused Silica windows.   In addition, The quality of a UV window can be extremely critical, it should be of high purity and polish in order not to affect the optical system.

Calcium Fluoride Windows are also applicable for a wide range of spectrum.  It is particularly useful for wavelength at 2980nm laser application.  

Red Optronics can supply IR CaF2 window up to 8 inch(or 200mm) in diameter.

Main Specifications  
  High Precision Standard Precision
Material:

UVU or IR grade Calcium Fluoride Single Crystal

Size Dia 5.0~80.0mm x thickness 0.5~10.0mm
Diameter Tolerance:

+0/-0.10mm

Thickness Tolerance:

0.10mm

Clear Aperture: > 85%
Flatness: l /4 1 l per 25mm @633nm
Parallelism: <1 arc minute <3~5 arc minutes
Surface Quality: 40/20 60/40
Bevel: 0.25mm x 45
Coating:

Available upon request

 

Standard Products
Part No.
Diameter (mm)
Thickness (mm)
WIN-3101

12.7

2.0
WIN-3102
12.7
3.0
WIN-3103
25.4
2.0
WIN-3104
25.4
3.0
WIN-3105
50.8

3.0

WIN-3106

50.8

4.0

   

    

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