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Calcium Fluoride (CaF2) Windows SKU: 530-6131
• Calcium fluoride (CaF2) has useful transmission over the spectral range from 0.2 to 8.0 microns • UV and IR grade CaF2 windows are popular choice for specroscopic and thermal imaging applications • CaF2 windows have high damage threshold and can be used as mirror substrates…
Variant specifications
| Specification | Value |
|---|---|
| Diameter | ø 25.4 mm |
| Thickness | 1.5 mm |
| Substrate | IR grade CaF2 |
| Group | IR Grade CaF2 Protective Windows for Spectroscopy Applications |
Shared product specifications
These specifications apply across the Calcium Fluoride (CaF2) Windows product family.
Specifications of CaF₂ Windows
| Material | CaF₂ |
| Surface quality | 40-20 scratch & dig (MIL-PRF-13830B) |
| Clear aperture | 90% of diameter |
| Diameter tolerance | +0.0 -0.13 mm |
| Thickness tolerance | ±0.2 mm |
| Parallelism | 3 arcmin |
| Flatness | λ / 4 @ 633 nm |
| Spectral range | UV, VIS, IR |
| Material | CaF₂ |
| Surface quality | 80-50 scratch & dig (MIL-PRF-13830B) |
| Clear aperture | 90% of diameter |
| Diameter tolerance | +0.0 -0.13 mm |
| Thickness tolerance | ±0.2 mm |
| Parallelism | <10 arcmin |
| Flatness | optically polished |
Physical Properties
| Crystal Type | cubic |
| Density, g / cm³ | 3.18 |
| Melting point, °C | 1418 |
| Refractive index @ 1.0 µm | n=1.4289 |
| Transmission band, µm | 0.125-10 |
| Lattice constant, A | a=5.462 |
Classification
| Wavelength | UV|IR |
Product brochures
Shared documentation for the complete product family.