Optical components which modify the state of polarization of optical radiation. Brewster windows, polarization plane rotators, cube polarizing beamsplitters, Glan laser prisms, Glan-Taylor laser prisms, Wollaston and Rochon polarizing prisms, Fresnel rhombs, round or rectangular shape thin film laser polarizers (TFP). Wide selection of quartz retardation plates including zero order optically contacted or air-spaced, achromatic air-spaced, zero order dual wavelength, low order and multiple order.