Wollaston polarizer is made of two birefringent material prisms that are cemented together. The deviations of the ordinary and extraordinary beams are nearly symmetrical about the input beam axis,
Wollaston Polarizer
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Wollaston Polarizers ideal for laboratory experiments for their access to both ordinary and extraordinary rays are available at A-Star optics.
A Wollaston prism is another birefringent polarizer consisting of two triangular calcite prisms with orthogonal crystal axes that are cemented together.
Wollaston polarizer is made of two birefringent material prisms that are cemented together. The deviations of the ordinary and extraordinary beams are nearly symmetrical about the input beam axis, so that the Wollaston polarizing beam splitter has approximately twice the deviation of the Rochon. The separation angle exhibits chromatic dispersion, as shown in the blow. Any separation angle can be designed upon the requirement. The separation angle of standard products vs wavelength is shown in the plot below.
Wollaston Polarizer Features:
Cemented
Separate Ordinary and Extraordinary Beams at Certain Angle
Suitable for Low Power Application and where the deviation is required
Wollaston Polarizer Specifications:
| Attribute | Specification |
| Material: | MgF2,α-BBO,Calcite ,YVO4 or Quartz |
| Wavelength Range: | MgF2:130-4000nm;α-BBO:190-3500nm; Calcite:350-2300nm;YVO4:400-5000nm; Quartz:200-2300nm |
| Extinction Ratio： | MgF2: ＜5×10-6; α-BBO:＜5×10-6; Calcite:＜5×10-5; YVO4 :＜5×10-6 Quartz: ＜5×10-5 |
| Surface Quality： | 20/10 Scratch/Dig |
| Beam Deviation: | ＜1 arc minutes |
| Flatness: | λ/4@633nm |
| Damage Threshold： | ＞500MW/cm2 |
| Coating： | Single Layer MgF2 |
| Holder： | Black Anodized Aluminum |
MgF2 Wollaston Polarizer
| Part. No. | Wavelength Range(nm) | Extinction Ratio | Angular Field(°) | C.A.(φa)±0.1(mm) | O.D.(φd)±0.1(mm) | L±0.1 (mm) |
| PWS5006 | 130-4000nm | ＜5×10-6 | 2.7°@1064nm | 6.0 | 15.0 | 19.5 |
| PWS5008 | 8.0 | 25.4 | 23.5 | |||
| PWS5010 | 10.0 | 25.4 | 27.5 | |||
| PWS5015 | 15.0 | 30.0 | 37.5 | |||
| PWS5020 | 20.0 | 38.0 | 47.5 |
α-BBO Wollaston Polarizer
| Part. No. | Wavelength Range(nm) | Extinction Ratio | Angular Field(°) | C.A.(φa)±0.1(mm) | O.D.(φd)±0.1(mm) | L±0.1 (mm) |
| PWS6006 | 190-3500nm | ＜5×10-6 | 15-27° 16°@900nm | 6.0 | 15.0 | 14.0 |
| PWS6008 | 8.0 | 25.4 | 16.0 | |||
| PWS6010 | 10.0 | 25.4 | 18.0 | |||
| PWS6015 | 15.0 | 30.0 | 23.0 | |||
| PWS6020 | 20.0 | 38.0 | 28.0 |
Calcite Wollaston Polarizer
| Part. No. | Wavelength Range(nm) | Extinction Ratio | Angular Field(°) | C.A.(φa)±0.1(mm) | O.D.(φd)±0.1(mm) | L±0.1 (mm) |
| PWS7006 | 350-2300nm (Coating@990nm) | ＜5×10-6 | 16.7-22.5° 19°@990nm | 6.0 | 15.0 | 14.0 |
| PWS7008 | 8.0 | 25.4 | 16.0 | |||
| PWS7010 | 10.0 | 25.4 | 18.0 | |||
| PWS7015 | 15.0 | 30.0 | 23.0 | |||
| PWS7020 | 20.0 | 38.0 | 28.0 |
YVO4 Wollaston Polarizer
| Part. No. | Wavelength Range(nm) | Extinction Ratio | Angular Field(°) | C.A.(φa)±0.1(mm) | O.D.(φd)±0.1(mm) | L±0.1 (mm) |
| PWS8006 | 400-4000nm (Coating@1550nm) | ＜5×10-6 | 19.6-23.3° 20°@1550nm | 6.0 | 15.0 | 14.0 |
| PWS8008 | 8.0 | 25.4 | 16.0 | |||
| PWS8010 | 10.0 | 25.4 | 18.0 | |||
| PWS8015 | 15.0 | 30.0 | 20.0 | |||
| PWS8020 | 20.0 | 38.0 | 25.0 |
Quartz Wollaston Polarizer
| Part. No. | Wavelength Range(nm) | Extinction Ratio | Angular Field(°) | C.A.(φa)±0.1(mm) | O.D.(φd)±0.1(mm) | L±0.1 (mm) |
| PWS9006 | 200-2300nm (Coating@1064nm) | ＜5×10-5 | 2-3° 2°@1064nm | 6.0 | 15.0 | 20.0 |
| PWS9008 | 8.0 | 25.4 | 24.0 | |||
| PWS9010 | 10.0 | 25.4 | 28.8 | |||
| PWS9015 | 15.0 | 30.0 | 38.0 | |||
| PWS9020 | 20.0 | 38.0 | 48.0 |
Note: Order based on client requirement, including non-standard product and holder.
Wollaston Polarizer is made of birefringence material prisms that are cemented together. The ordinary ray in the first half of the prism becomes the extraordinary ray in the second half. The Wollaston Polarizing beam splitter has approximately twice the deviation for the Rochon Polarizer. der.