Model Number: | Calcite |
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Brand Name: | crysmit |
Place of Origin: | China (Mainland) |
Quick Details
Specifications
Physical and Optical Properties:
Crystal Structure
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Crystalline rhombihedral
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Density
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2.7 g/cm3
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Mohs Hardness
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3
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Hygroscopic Susceptibility
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Low
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Transparency Range
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350nm ~ 2300nm
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Thermal Expansion Coefficients
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aa=24.39x10-6/K
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ac=5.68x10-6/K
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Crystal Class
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Negative uniaxial with no=na=nb, ne=nc
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Refractive Index
Birefringence (Δn=ne-no)
Walk-Off Angle at 45 deg(ρ)
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no=1.6557, ne=1.4852, Δn = -0.1705, ρ=6.32 @633nm
no=1.6381, ne=1.4783, Δn = -0.1598, ρ=6.20 @1300nm
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Sellmeier Equations (λ in um)
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no2=2.69705+0.0192064/( λ2-0.01820)-0.0151624λ2
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ne2=2.18438+0.0087309/( λ2-0.01018)-0.0024411λ2
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Capabilities:
Dimension Tolerance
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±0.1mm
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Optical Axis Orientation
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±0.5deg
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Wavefront Distortion
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<λ/2@633nm
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Surface Flatness
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<λ/4@633nm
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Surface Quality
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20/10 Scratch and Dig
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Parallelism
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<15 arc seconds
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Perpendicularity
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<10 arc minutes
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Clear Aperture
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>90%
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AR-Coating
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Upon Request
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