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Rumpel M, Haefner M, Schoder T, et al. Circular grating waveguide structures for intracavity generation of azimuthal polarization in a thin-disk laser. Opt Lett. 2012;37(10):1763-5doi: 10.1364/OL.37.001763.
Rumpel, M., Haefner, M., Schoder, T., Pruss, C., Voss, A., Osten, W., Ahmed, M. A., & Graf, T. (2012). Circular grating waveguide structures for intracavity generation of azimuthal polarization in a thin-disk laser. Optics letters, 37(10), 1763-5. https://doi.org/10.1364/OL.37.001763
Rumpel, Martin, et al. "Circular grating waveguide structures for intracavity generation of azimuthal polarization in a thin-disk laser." Optics letters vol. 37,10 (2012): 1763-5. doi: https://doi.org/10.1364/OL.37.001763
Rumpel M, Haefner M, Schoder T, Pruss C, Voss A, Osten W, Ahmed MA, Graf T. Circular grating waveguide structures for intracavity generation of azimuthal polarization in a thin-disk laser. Opt Lett. 2012 May 15;37(10):1763-5. doi: 10.1364/OL.37.001763. PMID: 22627563.
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Opt Lett. 2012 May 15;37(10):1763-5. doi: 10.1364/OL.37.001763.

Circular grating waveguide structures for intracavity generation of azimuthal polarization in a thin-disk laser.

Optics letters

Martin Rumpel, Matthias Haefner, Thomas Schoder, Christof Pruss, Andreas Voss, Wolfgang Osten, Marwan Abdou Ahmed, Thomas Graf

Affiliations

  1. Institut für Strahlwerkzeuge (IFSW), Universität Stuttgart, Stuttgart, Germany. [email protected]?stuttgart.de

PMID: 22627563 DOI: 10.1364/OL.37.001763

Abstract

We report on the generation of beams with azimuthal polarization using resonant grating waveguide structures (GWSs) inside an Yb:YAG thin-disk laser (TDL) oscillator. Two different GWS concepts were used to select the polarization of the emitted beam. The first uses the resonant reflection principle, and the second is based on the leaky-mode approach already reported in our previous work. Up to 93 W and 103 W of output power were extracted from a TDL with an optical efficiency, η(oo), of 36.2% and 40.1% using the first and the second approaches, respectively. In both cases, a pure azimuthal polarization and a beam quality factor, M2, of about 2.2 were measured. The design, fabrication, and different experimental results, as well as the laser performances for both GWSs, are discussed in the present Letter.

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