Polarizers for laser light, spectral polarimetry and general light polarization

| Glan-Taylor Polarizers | Glan-Thompson Prism Polarizers
| Wollaston / Rochon Prism Polarizing Beam Splitters

Glan-Taylor Calcite Air Spaced Polarizers

The Glan-Taylor polarizer produces a high extinction ratio polarizer with low reflection losses and a high power handling capability. It is therefore particularly useful for polarizing laser light, with the further advantages that there is no transmission deviation or offset, and that a wide spectral range can be polarized. They come un-mounted or in the optional mount pictured to the right.

Specifications: Glan-Taylor Calcite Air Spaced Polarizers

End View Mounted

LEYSOP supplies GT model Glan-Taylor polarizers with apertures from 10-20mm and larger by special order. Side faces are fine ground, which is adequate to disperse the internally reflected polarization state. Polished side exit faces are provided if required. The interface angle makes the polarizer suitable for operation across the transmission range of 0.25 - 2.5µm. Other interface angles can be ordered to cover the full transmission range of calcite from 0.2 - 2.5µm. The optical surfaces are polished to a flatness of λ/4 at 0.63µm.

Glan Taylor Polarizer
With Orthogonal Output Side Exit Escape Windows

In this novel Glan Taylor polarizer design two side exit windows give orthogonal output escape beams and the mechanical mount gives a high degree of protection to all four optical surfaces. They come un-mounted or in the optional mount pictured to the right.

Specifications: Glan Taylor Polarizer with Orthogonal Output Side Exit Escape Windows

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Glan-Thompson Polarizers

Glan-Thompson cemented prism polarizers of calcite give the largest aperture field angle product of all calcite polarizer designs and the lowest transmission losses. The cemented interface, however, prevents their use with high power lasers. Applications include spectral polarimetry and general light polarization and analysis investigations.

In the standard form the length aperture ratio of L/A = 2.5 gives a useable angular polarized field symmetrical about the prism axis of greater than 14° while the long form L/A = achieves over 25°. They come un-mounted or in the optional mount pictured to the right.

GlanThompson Polarizer	End View Mounted

Specifications: Glan-Thompson Prism Polarizers

Wollaston /  Rochon Prism Polarizing Beam Splitters 

Wollaston Type

Wollaston prism polarizing beam splitters consist of two equal angle calcite prisms optically coupled with optic axis orthogonally crossed to the direction of propagation. The beam separation of about 20° is then approximately balanced about the input beam axis. The transmission range for cemented prisms of 0.32 to 2.5µm to 18° at 2.5µm. They come un-mounted or in the optional mount pictured to the right.

Rochon Type

In this arrangement one polarization state is transmitted undeviated through the prism while the orthogonal component is deviated approximately 10°. The straight through component is clearly chromatic while the deviated beam varies from 11° at 0.32µm to 8.5° at 2.5µm.

Wollaston Type BSW	Rochon Type BSR

Specifications: Wollaston /  Rochon Prism Polarizing Beam Splitters 

Both varieties can be made from optically contacted quartz. 
The beam deviation is then 1° but the spectral range is increased to 0.2 - 2.0µm.