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Optics for the control of polarisation are some of the most important elements in an optical system. Polarisers produce a linearly polarised beam from a non-polarised or random input. Bi-refringent materials such as calcite, quartz and mica produce controllable polarisation effects. Alternatively, thin film polarisation is highly effective for some applications. We can supply many types of polarisation optics so please contact us with your inquiry.
| Polarizer |
Transm-
ission |
Interface |
Damaged
Threshold |
Material |
wavelength
(nm) |
Extinction
Ratio |
Angular
Field(°) |
| Glan-Taylor Polarizer (PGT) |
Medium
|
Air-space |
Low to Medium;
200
MW/cm2;
(without escape windows) |
Calcite |
350-2300 |
<5x10-5 |
>7.7 |
| α - BBO |
190-3500 |
<5x10-6 |
>6.0 |
| YVO4 |
500-5000 |
<5x10-6 |
>6.5 |
| Glan-Laser Polarizer (PGL) |
Medium
|
Air-space |
High power;
500
MW/cm2;
(with escape windows) |
Calcite |
350-2300 |
<5x10-5 |
>7.7 |
| α - BBO |
190-3500 |
<5x10-6 |
>6.0 |
| YVO4 |
500-5000 |
<5x10-6 |
>6.5 |
| High Transmission Glan-Laser Polarizer (PGH) |
High
|
Air-space |
High power;
500
MW/cm2;
(with escape windows) |
Calcite |
350-2300 |
<5x10-5 |
>7.7 |
| YVO4 |
500-5000 |
<5x10-6 |
>6.5 |
| Glan-Thompson Polarizer (PGM) |
Medium
|
Cemented |
Low power;
100
MW/cm2 |
Calcite |
350-2300 |
<5x10-5 |
14-16 |
| Calcite |
350-2300 |
<5x10-5 |
25-28 |
| α - BBO |
220-900 |
<5x10-6 |
>15 |
| Glan-Thompson Polarizer Beamsplitter Cube (PGB) |
Medium
|
Cemented |
Low or Medium;
150
MW/cm2 |
Calcite |
350-2300 |
<5x10-5 |
14-16 |
| Wollaston Polarizer (PWS) |
High
|
Cemented |
low power;
100
MW/cm2
|
Calcite |
350-2300 |
<5x10-5 |
16.7-22.5 |
| α - BBO |
190-3500 |
<5x10-6 |
15-27 |
| YVO4 |
500-5000 |
<5x10-6 |
19.6-23.3 |
High
|
Optical Contact |
Medium power;
200
MW/cm2 |
Quartz |
200-2300 |
<5x10-5 |
2-3 |
| MgF2 |
110-8500 |
<5x10-4 |
2-3 |
| Rochon Polarizer (PRH) |
High
|
Cemented |
low power;
100
MW/cm2 |
α - BBO |
190-3500 |
<5x10-6 |
8-14 |
| YVO4 |
500-5000 |
<5x10-6 |
1-2 |
High
|
Optical Contact |
Medium power;
200
MW/cm2 |
Quartz |
200-2300 |
<5x10-5 |
1-2 |
| MgF2 |
110-8500 |
<5x10-4 |
1-2 |
| Polarization Beamsplitter (PBS) |
High
|
Cemented |
low power;
200
MW/cm2 |
BK7 |
single wavelength |
<1x10-3 |
5 |
| SF5 |
broadband wavelength |
<5x10-3 |
5 |
| Beam Displacer |
High
|
|
High power;
500
MW/cm2 |
Calcite |
350-2300 |
<5x10-5 |
5.6 |
| α - BBO |
190-3500 |
<5x10-6 |
5.6 |
| YVO4 |
500-5000 |
<5x10-6 |
5.6 |
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