Materials: Calcite, a-BBO, YVO4, or Quartz crystal.
Optically cemented structure.
High UV transmission down to 200nm.
High extinction ratio ( > 100,000:1 ) over an extremely
  large range of wavelength.
Large separation angle between the o- and e-rays.
Suitable for low power application.

Wollaston Polarizer Specifications

Wavelength Range: 190-2500nm (α-BBO)
                           350-2300nm (Calcite)
                           500-4000nm (YVO4)
                           200-2300nm (Quartz)
Surface Quality: 20-10 scratch and dig
Wavefront Distortion: < λ/4 @632.8nm
Dimensions Tolerance: +/- 0.1 mm
Coatings: Single layer MgF2 on input/output surfaces
         ( Multilayer AR coating available upon request )
Housing: Black anodized aluminum

Structure and beam polarization

Extinction
Ratio

Separation
Angle (o)

Clear Aperture φ(mm)

>15