Glan Taylor polarizer is made of two same birefringent material prisms that are assembled with an air space.Its length to aperture ratio which is less than 1.0 makes it a relatively thin polarizer.The polarizer with no side escape windows is suitable for low to medium power application where the side rejected beams are not required .The angular field of different materials of polarizers is listed below for comparison.
Angular Field vs Wavelength
Features
Air-spaced
Close to Brewster’s Angle Cutting
High Polarization Purity
Short Length
Suitable for low to medium power application where the rejected beam is not required
Material α-BBO,Calcite,YVO4
Extinction Ratio α-BBO:<5*10-6,Calcite:<5*10-5,YVO4:<5*10-6
Surface Quality 20/10 Scratch/Dig
Beam Deviation <3 arc minutes
Wavefront Distortion 200MW/cm2
Coating Single MgF2
Mount Black Anodized Aluminium