Contact Rainbow Research Optics for Polarizers. They specialize in custom optics , as well as Polarizers. Rainbow Research Optics offer UV Polarizing Cube BeamsplitterThin Film Plate PolarizersPolarizing Cube B/SHigh Energy Polarizing Cube BeamsplitterBroadband Polarizing Cube Beamsplitter and High Energy Broadband Polarizing Cube Beamsplitter. To learn more visit www.rainbowoptics.com today!