Calcite is a negative uniaxial crystal that has high birefringence, wide spectral transmission and availability in reasonably sized rhombs. Although is a fairly soft crystal and is easily scratched,..
| Transparency Range | 350-2300nm |
| Density |
2.7g/cm3
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| Hygroscopic Susceptibility | Very Low |
| Mohs Hardness | 3 |
| Thermal Expansion Coefficients（/CO） |
aa=24.39 X10-6/K
ac=5.68X10-6/K
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| Damage Threshold | >1GW/cm2 |
| 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
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| Item |
Calcite Crystal
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Wavelength
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350-2300nm
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Size
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0.2-60mm
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Optical Axis Orientation
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<6 arc min
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Parallelism
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<10 arc sec
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Surface Quality
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20/10
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Flatness
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λ/ 8
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| Clear Aperture | >95% | |
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Coating
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Upon Customer's Specification
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