The “Crystal Optics” 2005/2006 catalog from !%Jenoptik Laser, Optik, Systeme GmbH%! showcases the company’s Steeg & Reuter brand high-grade optical components of quartz, mica, calcite and other crystal additives for applications in the 121-nm to 45-μm spectral region. It discusses the fundamentals of polarizing optics such as polarization states and the use of polarized light, and presents prism polarizers with apertures between 9 and 14 mm, including the Wollaston, Glan Thompson and Glan Laser varieties. Along with standard products, sections are devoted to coating, quartz rotators, retardation plates and material specifications. Charts and diagrams are provided.