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
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 /2@633nm or better |
|
Chamfer |
Protected <0.5mmx45deg |
|
Coating |
None, per your request |
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