Glan Taylor prism polarizer is made of two same birefringent material prisms that are assembled with an air space. It has a length to aperture ratio less than 1.0 makes it a relatively thin polarizer. The polarizer with no side escape windows are suitable for low to medium power online_ordering where the side rejected beams are not required, which is suitable for a wide variety of online_orderings, particularly with collimated input beams. The angular field of different materials of polarizers listed below for comparison.