Polarization-selective grating mirrors used in the generation of radial polarization

摘要

Two novel methods to control the polarization of laser radiation are presented. The discrimination between different polarization distributions is performed with a corrugation grating in the top high-index layer of a multilayer mirror, which couples the undesired polarization into a lossy waveguide mode of the multilayer. The generation of radially polarized radiation in a laser resonator is presented as a practical verification of the principle.