| Physical and Optical Properties |
| Transparency Range |
350~2300nm |
| Partical Shape |
Crystalline rhombihedral |
| Density |
2.7 g/cm3 |
| Hygroscopic Susceptibility |
Low susceptibility to moisture |
| Mohs Hardness |
3 |
| Thermal Expansion Coefficient |
a a=24.39x10 -6 /k; a c=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°C (ρ) |
n o =1.6557, n e =1.4852
Δn=-0.1705, ρ= 6.20°@ 630nm |
n o =1.6629, n e =1.4885
Δn =-0.1705, ρ= 6.20°@ 1300nm |
| Sellmeier Equation |
n o 2 =2.69705+0.0192064/(λ2 -0.01820)-0.0151624λ2
n e 2 =2.18438+0.0087309/(λ2 -0.01018)-0.0024411λ2 |
