Thor Labs GT5-B Glan-Taylor Polarizer Prism, 5 mm Clear Aperture

Description

Glan-Taylor Polarizers produce extremely pure linear polarization with an extinction ratio greater than 100,000:1 and are meant for use with laser beams in the 350 nm* - 2.3 μm wavelength range. A significant amount of reflected light escapes the polarizers through the side port, including all of the ordinary ray and some of the extraordinary ray. As such, the escape beam is not fully polarized, and only the transmitted extraordinary ray should be used for applications that require a high-quality, polarized beam.
The input and output faces of these polarizers are polished to a laser quality 20-10 scratch-dig surface finish to minimize scattering of the transmitted extraordinary polarization component of the incident laser beam or light field. The ordinary polarization component is reflected and exits the polarizer at a 68° angle (wavelength dependent) through one of the two uncoated side ports, which are provided to allow bidirectional use of the polarizer. The escape ray is not fully polarized and the side escape ports have a lower surface quality of 80-50 scratch-dig.
Features:
Extinction Ratio for Output Beam: 100 000:1
Glan-Taylor Design (Air-Spaced Birefringent Crystal Prisms)
Fabricated from Laser-Quality Natural Calcite (Low Scatter)
Wavefront Distortion ≤λ/4 Over Clear Aperture (Excluding Side Ports)
20-10 Scratch-Dig Surface Quality on Input and Exit Faces (80-50 on Side Ports)