Our Glan–Thompson polarizers are crafted from carefully selected high-quality calcite, virtually free of striae and bubbles, delivering an exceptionally high extinction ratio across a broad spectral range. Each polarizer consists of two prisms joined with precision optical cement. The ordinary beam is fully reflected at the cement interface, while black-coated side surfaces absorb any stray light, ensuring clean, high-contrast polarization.

Available in both mounted and unmounted versions, the transmitted polarization is oriented at 45° relative to the prism edges, which is of particular importance when integrating unmounted prisms. Our Glan Thompson prisms are a good choice for a polarizer with high extinction in a wide variety of applications.  If your application involves high-intensity beams, Glan–Air prisms might be the safer choice.

Description

Glan–Thompson polarizers are offered in four tailored versions to meet diverse application requirements.

The short version is ideal for most applications, providing a high extinction ratio, excellent transmission, and minimal wavefront distortion across the visible and infrared spectral ranges.

The simple version shares the same geometry as the short version but features slightly reduced specifications for spectral range, extinction ratio, and wavefront distortion. This allows us to offer a highly competitive price while still delivering superior performance compared to alternative models.

The long version features crystals cut at a larger angle, enabling the polarizers to maintain their properties at higher angles of incidence. This makes them particularly suited for applications involving strongly divergent or convergent light. All other properties match those of the short version.

The UV version is crafted from calcite with the highest available UV transmission and joined with UV-transparent cement. This design ensures reliable polarization performance in the ultraviolet spectral range, starting above 250 nm.