Calcium Fluoride (CaF2)
Roditi offer high-purity Calcium Fluoride material for a range of Laser, IR and UV applications.
The wide transmission range, refractive index homogeneity and high laser-damage threshold make CaF2 ideal for eximer laser products. Optical components for UV, through visible and infrared benefit from high durability to normal atmospheres and CaF2‘s low solubility and its resistance to reagents. Laser components, from lenses and windows, to beam-steering prisms and mirrors are offered in high-purity Calcium Fluoride material.
Roditi’s optical CaF2 material is single-crystal optical quality, fabricated to order.
Specification
| Substance | Form | Diameter Range | Thickness Range | Transmission Range (µm) | Standard Surface Finish |
|---|---|---|---|---|---|
| Calcium Fluoride | Single Crystal | 5mm – 300mm | 1mm – 50mm | 0.15 – 7.00 | Fine Ground / Optical Polish |
Material Properties
| Transmission Range | 0.15 – 7.0 microns |
| Internal Transmission | >99.5% from 193nm to 7µm |
| Refractive Index Homogeneity | Range 3 to 15ppm @632.8nm PV |
| Bubbles & Inclusions | 1/1 x 0.050 (typ.) |
| Stress Birefringence | Range 0.5nm/cm to 15nm/cm @632.8nm |
| Crystal Orientation | <111>, <100> or Random |
| Density | 3.18 gm/cc |
| Melting Point | 1420°C |
| Poisson Ratio (µ) | 0.260 |
| Knopp Hardness | 158.3 Knoop |
| Crystal Structure | Cubic |
| Young’s Modulus [GPa] | 75.8 |
| Shear Modulus [GPa] | 33.77 |
