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BaF2 Crystal
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CaF2 (Calcium fluoride) Crystal

CaF2 (Calcium Fluoride) crystal is not only a conventional but also an excellent material for the applications of laser optics. The crystal covers a very wide transmission range from 130nm to 9500 nm (UV, VIS and IR), especially, features a high transmittivity in IR range. Those advantages make CaF2 an ideal material widely used in Laser, IR and UV optics for making optical windows and lenses, etc.

Main Properties:

Formula
CaF2
Structure
Cubic
Growth Method
Stockbarger Technique
Maximum Size
180 mm
Transmission Range (m)
0.15 - 9.0
Density (g/cm3)
3.18
Melting point (C)
1418
Hardness (Mohs)
4
Thermal Expansion Coefficient (10-6/K)
16.2-19.4
Thermal Conductivity(W m-1K-1)
9.17
Specific Heat Capacity (J kg-1K-1)
888
Solubility in Water (g/100 cm3)
0.0016
Solubility in Acids
unessential
Solubility in Organic Solvents
insoluble in acetone
Wavelength (m)
Refractive Index
0.2
0.5
1.0
5.0
10.0
12.0
1.4951
1.4365
1.4289
1.3990
1.3002
1.2299
Absorption Coefficient (cm-1)
0.10 at 0.2 m
0.01 at 0.4 m
0.03 at 2.6 -2.9 m

Transmission Spectrum: (Thickness 10 mm)

 

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