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CaF2 Window

CaF2 is a cubic single crystal. It has good transmission from UV to middle infrared wavelength. It is always used in excimer laser components. While, it is a little hygroscopic and susceptible to thermal shock. CaF2 material is relatively soft and somewhat hygroscopic so polishing, coating and handling are more critical than UV Fused Silica components.

 Transmission range: 170 nm~7775 nm
 Thermal Expansion coefficient: 18.85X10 -6 /K
 Density: 3.18 g/cm3

 

DELN can provide deep ultraviolet (excimer level), ultraviolet and infrared level calcium fluoride components.


Specifications

Material

CaF2 single crystal

Dimension Tolerance

+0.0/-0.1mm

Thickness Tolerance

±0.2mm

Clear Aperture

>90%

Parallelism

<1 arc minutes

Surface Quality

80/50 or 60/40 or 40/20

Flatness

<λ /[email protected] or better

Chamfer

Protected <0.5mmx45deg

Coating

None, per your request

 

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