| Model: | Calcite |
|---|---|
| Brand: | crysmit |
| Origin: | Made In China |
| Category: | Electronics & Electricity / Optical Fiber, Cable & Wire / Optical Fiber |
| Label: | Calcite , optical , crysmit |
| Price: |
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| Min. Order: | 1 pc |
| Last Online:08 Jun, 2015 |
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.
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Physical and Optical Properties:
|
Crystal Structure |
Crystalline rhombihedral |
|
Density |
2.7 g/cm3 |
|
Mohs Hardness |
3 |
|
Hygroscopic Susceptibility |
Low |
|
Transparency Range |
350nm ~ 2300nm |
|
Thermal Expansion Coefficients |
aa=24.39x10-6/K |
|
ac=5.68x10-6/K |
|
|
Crystal Class |
Negative uniaxial with no=na=nb, ne=nc |
|
Refractive Index Birefringence (Δn=ne-no) Walk-Off Angle at 45 deg(ρ) |
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 |
|
Sellmeier Equations (λ in um) |
no2=2.69705+0.0192064/( λ2-0.01820)-0.0151624λ2 |
|
ne2=2.18438+0.0087309/( λ2-0.01018)-0.0024411λ2 |
Capabilities:
|
Dimension Tolerance |
±0.1mm |
|
Optical Axis Orientation |
±0.5deg |
|
Wavefront Distortion |
<λ/2@633nm |
|
Surface Flatness |
<λ/4@633nm |
|
Surface Quality |
20/10 Scratch and Dig |
|
Parallelism |
<15 arc seconds |
|
Perpendicularity |
<10 arc minutes |
|
Clear Aperture |
>90% |
|
AR-Coating |
Upon Request |
