Wollaston Polarizer

A Wollaston polarizer has wider field of view than other birefringent polarizers. The two prisms are cemented together. Both ordinary and extraordinary beams transmit through the prism, however, at a deviation angle of 15° to 45° depending on the wavelength.

Material a-BBO or Calcite
Wavelength Range a-BBO: 190-3500nm, Calcite: 350-2300 nm /td>
Extinction Ratio Calcite:<5x10-5; a-BBO:<5x10-6
Diameter Tolerance ±0.10 mm
Parallelism <1 arc Min
Surface Quality 20/10
Beam Deviation < 3 arc minutes
Wavefront Distortion λ/4@632.8nm
Damage Threshold >500 MW/cm2
Coating MgF2
Mount Black anodized aluminum