PHASE SHIFTING DEVICE, AND LASER RESONATOR FOR GENERATING RADIALLY OR AZIMUTHALLY POLARIZED LASER RADIATION

摘要

The invention relates to a phase shifting device (42') for stabilizing radially or azimuthally polarized laser radiation within a laser resonator (40') that comprises a polarizer device (42') for generating radially or azimuthally polarized laser radiation (3a, 3b). The phase shifting device (42') is designed to generate a phase difference (?f) ranging from about 30° to about 330°, preferably from about 70° to about 290°, especially preferably from about 160° to about 200°, particularly a phase difference (?f) of about 180° per revolution in the laser resonator (40') while having an axial symmetry. The invention further relates to a laser resonator (40') comprising such a phase shifting device (42').