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title: Catalog RFQ Glan-Thompson Polarizer
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# Glan-Thompson Polarizer

This type of polarizer is made of two cemented right angle prisms. The s-polarized extraordinary beam is transmitted while the ordinary beam is reflected. The prisms provide larger field of view than the Glan-Taylor type.

| Material | a-BBO or Calcite |
| --- | --- |
| Wavelength Range | a-BBO: 200-3500 nm, Calcite: 350-2300 nm |
| Extinction Ratio | Calcite:<5x10-5; a-BBO:<5x10-6 |
| Diameter Tolerance | ±0.10 mm |
| Parallelism | <1 arc Min |
| Surface Quality | 20/10 |
| Beam Deviation | < 3 arc minutes |
| Wavefront Distortion | λ/4@632.8nm |
| Damage Threshold | >200 MW/cm2 |
| Coating | MgF2 |
| Mount | Black anodized aluminum |