The PP-UVFS-25.4-3.0-TFP4537 from OPTOMAN is a Thin-Film Polarizer that operates at a wavelength of 800 nm. It has a diameter of 25.4 mm and thickness of 3 mm. This UV-grade fused silica (UVFS) polarizer has a clear aperture above 20 mm and surface quality of 20/10 scratch-dig. It has a surface flatness of lambda and total wavefront distortion of lambda/10 (at 633 nm). This polarizer has a parallelism of less than 3 arcmin and an extinction ratio of 1000:1. It has an ion beam sputtering coating with an angle of incidence of 45 deg. This polarizer has a reflective surface with high reflectance above 99.9% (for s-polarized light) & high transmittance of over 98% (for p-polarized light) and an anti-reflective surface with a reflectance of less than 0.1% (for p-polarized light).