基本特性
| Transparency Range | 350~2300nm |
| Partical Shape | Crystalline rhombohedra |
| Density | 2.7g/cm3 |
| Thermal Expansion Coefficient | Low susceptibility to moisture |
| Mohs Hardness | 3 |
| Thermal Expansion Coefficient | aa=24.39x10-6/k; ac=5.68x10-6/k |
| Crystal Class | Negative uniaxial with no=na=nb, ne=nc |
| Refractive index, birefringence(Δ=ne-no) and walk-off angle at 45℃(ρ) | no=1.6557,ne=1.4852 |
| Δn=-0.1705,ρ=6.20@630nm | |
| no=1.6629,ne=1.4885 | |
| Δn=-0.1705,ρ=6.20°@1300nm | |
| Sellmeier Equation | no2=2.69705+0.0192064/(λ2-0.01820)-0.0151624λ2 |
| ne2=2.18438+0.0087309/(λ2-0.01018)-0.0024411λ2 |
加工能力
| 常规精度指标 | |
| 尺寸 | max. 45mm |
| 长度 | max. 35mm |
| 定向精度 | +/-0.5° |
| 表面光洁度 | S/D 40-20 |
| 平行度 | <15 arc seconds |
| 垂直度 | <10 arc minutes |
| 面形 | < Lambda/8 @633nm |
| 波前畸变 | < Lambda/8 @633nm |
| 镀膜 | 根据客户要求 |
