透射鏡片材料 — Strontium Fluoride (SrF2) 氟化鍶
| Transmission Range % | 50 |
| Transmission Range | 0.14 – 9 μm (thickness 2mm) |
| Refractive Index | 1.436914 @633 nm |
| Reflection Loss | 1.74% @10 μm |
| Residual Beam Wavelength | 40 μm |
| Density | 4.24 g/cm3 |
| Melting point | 1477°C |
| Molecular Weight | 125.62 |
| Thermal Conductivity | 1.42 W/m·K @298K |
| Spec. Heat Capacity | 544 J/kg·K |
| Thermal Expansion | 18.4 · 10-6/K @293K |
| Hardness (Mohs) | 130 <111> |
| Young’s Modulus | 99.91 GPa |
| Shear Modulus | 34.6 GPa |
| Bulk Modulus | 24.65 GPa |
| Elastic Coefficient | C11?= 124; C12?= 44; C44?= 31.8 GP |
| Dielectric Constant | 7.69 @2MHz |
| Solubility in Water | 0.021g / 100g @25°C |
| Crystal Structure | single crystal, synthetic |
| Crystal Type | cubic, CaF2?type structure, a0?= 5.7996 ? |
| Cleavage Planes | (111) |
| Poisson Ratio | 0.29 |
| Application | UV and VUV spectroscopy |
