CO2 Laser Polarize Lock Mirror, Silicon, 50 mm Diameter, 9.0 mm Edge, Plano, PLM

The 631555-117 CO2 laser cavity polarize lock total reflector mirror is 1.97 inch (50 mm) diameter with a 9.0 mm edge thickness. This plano silicon mirror features our PLM coating.  Laser resonators rely on small differences in the reflectivity of fold mirrors for different polarization states to give a stable linearly polarized output. In some cases, the small reflection gaps of the total reflector mirror coatings are not enough to keep the polarization from fluctuating. Using specific properties of the materials selected in optical coating design, we are able to increase the differences in the reflection of Spolarization compared to P-polarization and achieve a truly stable “locked” polarization.