DescriptionSpecifications
Models
Catalog PDF
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Our Glan-Thompson Calcite Polarizers provide high purity linear polarization for broadband sources or multiple laser wavelengths. The large acceptance angle of these polarizers allows them to be used in highly converging or diverging beams. S-polarization is transmitted with Ts >90%, while p-polarization is reflected and absorbed into the housing.
Our Glan-Thompson polarizers are fabricated from select-grade calcite prism pairs, cemented together and assembled into a black anodized aluminum housing. The cemented surface limits their use to lower power applications. The output polarization axis is clearly marked on the housing. The housing has been designed to mount into our standard 25.4 mm optic holders, rotary stages, and precision positioning components. These polarizers are offered with broadband antireflection coatings for the visible and near infrared regions to maximize transmission. |
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Specifications
| Material | Calcite |
| Wavefront Distortion | ≤λ/4 at 632.8 nm over the full aperture |
| Clear Aperture | 10 mm |
| Surface Quality | 20-10 scratch-dig |
| Transmission | Ts > 90%, polarized input, with AR coating for 430–700 nm |
| Extinction Ratio | Tp/Ts > 100,000:1, 400–1064 nm, unpolarized input |
| Transmitted Beam Deviation | <3 arc min |
| Acceptance Angle | 14°–16°, full angle |
| Dimensions Tolerance | |
| Antireflection Coating | Ravg <0.5%, broadband, multilayer antireflection coating |
| Temperature Range | -50 °C to 90 °C |
| Durability | MIL-C-675C, moderate abrasion |
| Damage Threshold | 1 W/cm2 CW, 0.1 µJ/cm2 with 10 nsec pulses, typical(uncoated) |