title: High-power radially polarized Yb:YAG thin-disk laser with high efficiency.
abstract: Radially polarized beams with an output power of 275 W, M2=2.3 and an efficiency of about 52.5% were generated from an Yb:YAG thin-disk laser. An intra-cavity circular resonant waveguide grating was used as a polarization selective mirror inside the laser cavity. We report on the design and the fabrication using a scanning beam interference lithography system and discuss the calculated and measured performances of the presented polarizing grating mirrors.
authors: Institut für Strahlwerkzeuge (IFSW), University of Stuttgart, Pfaffenwaldring 43, D-70569 Stuttgart, Germany. abdou.ahmed@ifsw.uni-stuttgart.de
authors: Marwan Abdou
authors: MA
authors: Ahmed
authors: Matthias
authors: M
authors: Haefner
authors: Moritz
authors: M
authors: Vogel
authors: Christof
authors: C
authors: Pruss
authors: Andreas
authors: A
authors: Voss
authors: Wolfgang
authors: W
authors: Osten
authors: Thomas
authors: T
authors: Graf