Calcite is a negative uniaxial crystal that has high birefringence, wide spectral transmission and availability in reasonably sized rhombs. Although a fairly soft crystal and easily scratched, Calcite is an ideal material for use as visible wavelengths and near IR polarizers such as Glan Taylor, Glan Thompson and Glan Laser.
Basic Properties:
| Material | Calcite Crystal |
Transparency Range | 350~2300nm |
Density | 32.7 g/cm 2 |
Hygroscopic Susceptibility | NA |
Mohs Hardness | 3 |
Thermal Expansion Coefficients（/CO） | 24.39X10-6 （C ） |
5.68X10-6 （A ） |
Damage Threshold | 1GW |
Refractive Indices | No= 1.66315，Ne= 1.48854，532nm No=1.64237，Ne=1.47968，1064nm |
Sellmeier Equation (λ in μm) | no2=2.69705 + 0.0192064/(λ2-0.01820) - 0.0151624λ2 ne2=2.18438 + 0.0087309/(λ2-0.01018) - 0.0024411λ2 |
