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Calcite crystal is a natural birefringent material with a rhombohedral shape, large birefringence, and a wide transmission spectrum, with good optical performance from the visible to the near-infrared. Although calcite is relatively soft mechanically and easily scratched, this does not affect its wide application in polarizing devices. Calcite is mainly used in Glan prisms.
Specification Snapshot
Surface Quality
20/10
Clear Aperture Dimension
>90%
Parallelism
<15 arcsec
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Overview
Calcite crystal is a natural birefringent material with a rhombohedral shape, large birefringence, and a wide transmission spectrum, with good optical performance from the visible to the near-infrared. Although calcite is relatively soft mechanically and easily scratched, this does not affect its wide application in polarizing devices. Calcite is mainly used in Glan prisms.
Specifications
| Parameter | Value |
|---|---|
| Overview - Crystal Structure | Orthorhombic crystal system |
| Overview - Density | 2.7 g/cm^3 |
| Overview - Deliquescence | Low |
| Overview - Thermal Expansion Coefficient | aa=24.39x10^-6/K;ac=5.68x10^-6/K |
| Overview - Crystal System | Negative uniaxial crystal, no=na=nb, ne=nc |
| Overview - Refractive Index and Walk-off Angle at 45° (Δn=ne-no) | 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 |
| Overview - Sellmeier Equation (λ in μm) | no^2=2.69705+0.0192064/(λ^2-0.01820)-0.0151624λ^2 ne^2=2.18438+0.0087309/(λ^2-0.01018)-0.0024411λ^2 |
| Pointing Accuracy | ±0.5° |
| Clear Aperture Dimension | >90% |
| Transmitted Wavefront Distortion | <λ/2@633nm |
| Parallelism | <15 arcsec |
| Specification - Side Perpendicularity | <10 arcmin |
Datasheet
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Supplier Information
Union Optic Inc., founded in 2004, is a high-tech company located in Optics Valley of China, specializing in research and development, production and sales of precision optical components. Union Optic has established a comprehensive quality management system and perfect rules and regulations since its foundation. By using enterprise ERP management system, Union Optic offers full product lifecycle support across a range of process, production, quality control, sales, logistics and finance into informatization management to keep it on a correct and efficient pace.
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