Glan Thompson Polarizers of Calcite D12.7mm 350-2300nm with Round Mount 25°

Code: 20703-011

$660.00

Specifications:

Material	Calcite	Wavelength Range	350~2300nm
Aperture Size	ɸ12.7mm	Extinction Ratio	<5x10^-5
Acceptance Angle	>25°	Surface Quality	20 / 10 S/D
Parallelism	<1 arc Min	Beam Deviation	< 3 arc minutes
Wavefront Distortion	λ /4@633nm	Damage Threshold	>100 MW/cm²@1064nm, 20ns, 20Hz
Coating	Single MgF2	Mount	Black Anodized Aluminium
Mount Size	ɸ25.4x46mm

Glan-Thompson polarizers consist of two cemented prisms made from the highest optical grade of calcite or a-BBO crystal. Unpolarized light enters the polarizer and is split at the interface between the two crystals. The ordinary rays are reflected at each interface, causing them to be scattered and partially absorbed by the polarizer housing. The extraordinary rays pass straight through the polarizer, providing a polarized output.

Angular Field vs Wavelength (Calcite 350-2300nm)

Calcite

350-2300nm

ɸ12.7mm

<5x10-5

>25°

ɸ25.4x46mm

$660

4 weeks

Optical Calcite Crystals

Broad transparent spectral range 0.2μm to 2.5μm
High birefringence
Soft and easy to be scratched
Applications: Polarizers, Beam divergent element, Laser gate.

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