Calcite Crystal
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, it is ideal material used as visible and near IR polarizers, such as Glan Thompson, and Glan Taylor Glan laser.
Basic Properties：
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Transparency Range
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350-2300nm
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Density
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2.7g/cm3
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Hygroscopic Susceptibility
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Very Low
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Mohs Hardness
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3
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Thermal Expansion Coefficients（/CO）
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aa=24.39 X10-6/K
ac=5.68X10-6/K
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Damage Threshold
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>1GW/cm2
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Sellmeier Equation (λ in μm)
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no2=2.69705 + 0.0192064/(λ2-0.01820) - 0.0151624λ2
ne2=2.18438 + 0.0087309/(λ2-0.01018) - 0.0024411λ2
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Capabilities:
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Item
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Calcite Crystal
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材料曲线
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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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