Glan-Thompson Calcite Polarizers
Glan-Thompson Calcite Polarizers
Our Glan-Thompson Calcite Polarizers provide high purity linear polarization for broadband sources or multiple laser wavelengths for lower power applications. Their 14°-16° acceptance angle allows them to be used in highly converging or diverging beams. The housing mounts into our standard 25.4 mm holders, and the polarizers are offered with broadband AR coatings for the visible and NIR regions.
- Wide acceptance angle with superior broadband performance
- Extinction ratio >100,000:1
- Low wavefront distortion
- Best select-grade calcite
- S-polarization is transmitted with Ts >90%
- P-polarization is rejected and absorbed within the housing See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 10GT04 Glan-Thompson Calcite PolarizersPolarizer, Glan-Thompson Calcite, 25.4 mm Diameter, Uncoated | |||||
| 10GT04AR.14 Glan-Thompson Calcite PolarizersPolarizer, Glan-Thompson Calcite, 25.4 mm Diameter, 430 to 700 nm | |||||
| 10GT04AR.16 Glan-Thompson Calcite PolarizersPolarizer, Glan-Thompson Calcite, 25.4 mm Diameter, 650 to 1000 nm | |||||
| 10GT04AR.18 Glan-Thompson Calcite PolarizersPolarizer, Glan-Thompson Calcite, 25.4 mm Diameter, 1000 to 1550nm |
Features
Glan-Thompson Polarizer Construction
How Glan-Thompson Calcite Polarizers Work
Glan-Thompson prisms are formed using two identical calcite prisms with hypotenuses cemented to one another to form a surface that efficiently transmits one polarization state specifically. The prisms have the same optical axis orientation as one another, which is perpendicular to the plane of reflection (the shared hypotenuse). Light that is s-polarized with respect to the reflective hypotenuse experiences the higher ordinary refractive index of calcite. As calcite has a large index difference between extraordinary and ordinary rays, the polarizer has a fairly wide range of acceptance angles that result in transmission of only highly pure s-polarized light. Thus Glan Thompson prisms have a wide usable acceptance angle and are especially well suited for use with diverging and converging beams.
Excellent Optical Properties
Our Glan-Thompson Calcite Polarizers are designed to meet the most demanding applications that require high purity linear polarization. Constructed of optical grade calcite, which features excellent optical properties, including an extinction ratio of greater than 100,000:1, they have a high damage threshold of 1 W/cm2 CW, 0.1 µJ/cm2 with 10 nsec pulses, typical, and precision surface quality of 20-10 scratch-dig. Available uncoated or with AR coatings for the visible and NIR regions, these polarizers transmit S-polarization with Ts>90% and reject P-polarization to be absorbed within the polarizer housing.
Stage Mounting
The Glan-Thompson polarizer has a black anodized aluminum housing. The knurled ring at the center of the housing will unscrew to yield a 1.063-20 thread. This thread conveniently screws into Newport's popular rotation stages such as 481-A, M1-1PR, RSP-1T, GM-1RA, and AG-PR100 to mention a few.
Accessories
Compatible Mounts
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 481-A Rotation Stage, 360° Coarse, 5° Fine, Micrometer, 8-32 and 1/4-20 | |||||
 | AG-PR100 Piezo Rotation Stage, 1 inch, Agilis™ | |||||
 | GM-1RA Optic Rotation Mount, Gimbal Tip-Tilt, 25.4 mm, 100 TPI | |||||
 | M1-1PR Optic Rotation Mount, Kinematic Tip-Tilt, 25.4 mm, 100 TPI | |||||
 | RSP-1T Optic Rotation Mount, 25.4 mm, Fine Adjust Knob, 8-32 and M4 |
