The Glan Thompson polarizer consists of two calcite prisms or α-bbo prisms. There are two types of Gran Thompson. One is the standard form, the other is the long form. The ratio of length to aperture is 2.5:1 and 3.0:1, respectively. Gran Thompson has higher extinction ratio than air spaced polarizer. In the ultraviolet spectrum, their transmission is limited by the absorption of birefringent material and cement layer. α-bbo polarizer and calcite polarizer can be used in the range of 220-900 nm and 350-2300 nm, respectively. The polarizer has the largest field angle in any design. The standard form of the polarizer is 2.5:1 long aperture ratio, and the complete acceptance angle is greater than 15 degrees.
Parameter
Basic Parameters
| Material | Calcite |
| Product ID | PA01003 |
| Wavelength Range | 400-2300nm |
| Extinction Ratio | <5×10-5 |
| Surface Quality | 20/10 |
| Wavefront Distortion | <λ/4@632.8nm |
| Beam Deviation | <3 arcmin |
| Damage Threshold | 5W/cm2 CW，1064nm |
| Coating | Single Layer MgF2@1064nm, Tp>90%@1064nm Typical |
| Mount | Black Anodized Aluminium |
Feature
- Low Power Application
- High Polarization Purity
- Large Acceptance Angle
- RoHS Compliant
Spectrogram
