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Calcite Crystals

 

 
Calcite is a negative uniaxial crystal that has high birefringence, wide spectral transmission and availability in reasonably sized rhombs. Although a fairly soft crystal and easily scratched, Calcite is an ideal material for use as visible wavelengths and near IR polarizers such as Glan Taylor, Glan Thompson and Glan Laser.
 

 

Basic Properties of Calcite crystal
Transparency Range
350~2300nm
Density
32.7 g/cm 2
Hygroscopic Susceptibility
NA
Mohs Hardness
3
Thermal Expansion Coefficients（/CO）
24.39X10-6 （C ）
5.68X10-6 （A ）
Damage Threshold
1GW
Refractive Indices
No= 1.66315，Ne= 1.48854，532nm
No=1.64237，Ne=1.47968，1064nm
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
 

Capabilities
Material
Calcite Crystal
 
          
 
                              
      Transparency Curve
Size
1mm-40mm
Surface Quality
10-5
Optical Axis Orientation
6 arc min
Parallelism
<10 ace sec
Flatness
λ/4@633nm
Clear Aperture
>90%
Coating
AR coating
Mount
Upon Customer's Specification