Glan Laser Polarizer

Glan Laser polarizer is made of two same birefringent material prisms that are assembled with an air space. Photonchina’s polarizer is a modification of the Glan Taylor type and is designed to have less reflection loss at the prism junction. The polarizer with two escape windows allow the rejected beam to escape out of the polarizer, which makes it more desirable for high energy lasers. The surface quality of these faces is relatively poor as compared to that of entrance and exit faces. No scratch dig surface quality specifications are assigned to these faces.

Photonchina Feature： 

●Air-spaced

●Close to Brewster's Angle Cutting

●High Polarization Purity

●Short Length

●Wide Wavelength Range

●Suitable for medium power application

Specifications：

 Material: a-BBO, Calcite or YVO 4

 Wavelength Range: BBO:200～3500 nm, Calcite:350～2300 nm,  YVO4:500～4000 nm

 Extinction Ratio: Calcite:<5x10-5 ; a-BBO:<5x10-6 ; YVO 4 :<5x10-6

 Surface Quality: 20 / 10

 Parallelism: <1 arc Min

 Beam Deviation: <3 arc minutes

 Wavefront Distortion: λ /4@633nm

 Damage Threshold: >500 MW/cm2

 Coating: Single MgF2

 Mount: Black Anodized Aluminium

Glan Taylor Polarizer

Glan Taylor polarizer is made of two birefringent prisms that are assembled with an air space. 

The polarizer with no side escape windows is suitable for low to medium power application where the side rejected beams are not required. 

Photonchina Feature： 

●Air-spaced

●Close to Brewster's Angle Cutting

●High Polarization Purity

●Short Length

●Wide Wavelength Range

●Suitable for low to medium power application

1. Calcite Glan Taylor Polarizer

C.A. fa(mm) O.D. fd(mm) L ¯0.1(mm)

6.0           15.0          15.0

8.0           25.4          17.0

10.0           25.4          19.0

15.0           30.0          23.0

20.0           38.0          29.0

2. a-BBO Glan Taylor Polarizer

C.A. fa(mm) O.D. fd(mm) L¯0.1(mm)

6.0          15.0          15.0

8.0          25.4          17.0

10.0          25.4          19.0

15.0          30.0          23.0

20.0          38.0          29.0

3. YVO4 Glan Taylor Polarizer

C.A. fa(mm) O.D. fd(mm) L ¯0.1(mm)

6.0            15.0            12.0

8.0            25.4            15.0

10.0            25.4            17.0

15.0            30.0            20.0

20.0            38.0            25.0

Glan-Thompson Polarizer

Photonchina’s Glan-Thompson Polarizer is made of two cemented calcite (or a-BBO) prisms that are at the highest optical level. When the unpolarized light enters Glan-Thmopson Polarizer, it will separate at the intersection of the two calcite crystals. S-polarized light (e-ray) then goes on and P-polarized light (o-ray) will be reflected.

Function of Glan Thompson Polarizer

Thanks to the large field of view, the polarizer is ideal for highly converging or diverging beams. They provide high polarization and great transmission in the two emerging beams which are useful if it is required to utilize both linear polarization states.  

Features of Photonchina’s Glan-Thompson Polarizer

Wide field of view

High extinction ratio

Both coated and uncoated types are available: 

350-2300 nm for uncoated;  350-700nm or 650-1050nm for AR coated

You may choose from calcite or a-BBO crystal

Both mounted and unmounted are provided by Photonchina  

Specifications of Photonchina’s Glan-Thompson Polarizer

Material: a-BBO, Calcite

Wavelength Range: a-BBO: 200～3500 nm, Calcite: 350～2300 nm

Extinction Ratio: a-BBO:<5x10-6 , Calcite:<5x10-5

Surface Quality: 20 / 10

Parallelism: <1 arc Min

Beam Deviation: <3 arc minutes

Wavefront Distortion: λ /4@633nm

Damage Threshold: >200 MW/cm2

Coating: Single MgF2

Mount: Black Anodized Aluminium