Overview: A Glan–Thompson prism consists of two right-angled calcite prisms that are cemented
together by their long faces. The optical axes of the calcite
crystals are parallel and aligned perpendicular to the plane of
reflection. Birefringence splits light entering the prism into two
rays, experiencing different refractive indices; the p-polarized ordinary ray is totally internally reflected from the
calcite–cement interface, leaving the s-polarized extraordinary ray to be transmitted. The prism can
therefore be used as a polarizing beam splitter. General Specifications of Glan-Thompson Prism: Material | Calcite | Wavelength Range | 400-2300nm | Extinction Ratio | <5x10-5 | Surface Quality | 20/10 scratch and dig | Wavefront Distortion | <λ/4@632.8nm | Beam Deviation | <3 arc minutes | Damage Threshold | >5W/cm2 CW, 1064nm | Coating | Single Layer MgF2 @ 1064nm, Tp>90%@1064nm Typical | Mount | Black Anodized Aluminium |
Standard Products of Glan-Thompson Prism: Part Number | Material | Wavelength (nm) | Angular Field (°) | CA (mm) | Mount (mm) | AR Coating | GMP-C-1416-08 | Calcite | 400-2300 | 14-16 | 8.0 | φ25.4X28 | MgF2 | GMP-C-1416-10 | Calcite | 400-2300 | 14-16 | 10.0 | φ25.4X33 | MgF2 | GMP-C-1416-12 | Calcite | 400-2300 | 14-16 | 12.7 | φ25.4X40 | MgF2 |
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