Calcium Fluoride(CaF2) optical Crystal is widespread used in applications of Ultraviolet(UV),Infrared(IR) and visible light, like optical windows, optical lens and thermal imagining, it has wide transmissive range from 0.13um(UV) to 10um(IR) and low refractive index. Calcium Fluoride’s combination of low absorption with a high damage threshold makes it an excellent material for use with Excimer lasers.
Parameter
Property | Value |
Chemical formula | CaF2 |
Crystal structure | Cubic |
Lattice parameters | a = 5.462Å |
Density | 3.18 g/cm3 |
Melting Point | 1418°C |
Refractive Index | 1.39908@5um |
Thermal Conductivity/(W·cm-1·K-1@36°C) | 9.71 |
Thermal Expansion | 16.5-19.4 |
Specific Heat / (J·g-1·K-1) | 0.8876×103 |
Hardness (Mohs) | 4 |
Young`s Modulus /GPa | 75.79 |
Shear Modulus / GPa | 33.76 |
Orientation | [100] or [111] |
Poisson Ratio | 0.28 |
Property | Value |
Materials | CaF2 |
Orientation | <100>,<±0.5° |
Paralle | 10ꞌꞌ |
Perpendicular | 10ꞌ |
Surface quality | 40//20 |
Wavefront ditortion | λ/4@632nm |
Clear aperture | >95% |
Chamfer | <0.2×45° |
Thickness/Diameter tolerance | ±0.1 mm |
Maximum dimensions | Dia300×100mm |
Surface flatness | λ/4@632nm |
Property | Value |
Materials | CaF2 |
Orientation | <001> or <100>,<±0.2° |
Paralle | 10ꞌꞌ |
Perpendicular | 5ꞌ |
Surface quality | 10//5 |
Wavefront ditortion | λ/8@632nm |
Clear aperture | >95% |
Chamfer | <0.2×45° |
Thickness/Diameter tolerance | ±0.1 mm |
Maximum dimensions | Dia300×100mm |
Surface flatness | λ/8@632nm |
- Low refractive index
- Insolubility
- Wide transmission range
- Low dispersion
- High temperature resistance
- Achromatic microscope
- Laser windows
- Excimer Laser Optics
- UV and IR windows
- CaF2 lens
- Cryogenically cooled thermal imaging
More Picture
CaF2
Φ13×0.75 mm
Both sides polished
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