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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 10 — May. 15, 2012
  • pp: 1763–1765

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

Martin Rumpel, Matthias Haefner, Thomas Schoder, Christof Pruss, Andreas Voss, Wolfgang Osten, Marwan Abdou Ahmed, and Thomas Graf  »View Author Affiliations


Optics Letters, Vol. 37, Issue 10, pp. 1763-1765 (2012)
http://dx.doi.org/10.1364/OL.37.001763


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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, ηoo, 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.

© 2012 Optical Society of America

OCIS Codes
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.5440) Optical devices : Polarization-selective devices
(230.7370) Optical devices : Waveguides
(310.2785) Thin films : Guided wave applications
(140.3615) Lasers and laser optics : Lasers, ytterbium
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Optical Devices

History
Original Manuscript: February 13, 2012
Revised Manuscript: February 24, 2012
Manuscript Accepted: March 3, 2012
Published: May 15, 2012

Citation
Martin Rumpel, Matthias Haefner, Thomas Schoder, Christof Pruss, Andreas Voss, Wolfgang Osten, Marwan Abdou Ahmed, and Thomas Graf, "Circular grating waveguide structures for intracavity generation of azimuthal polarization in a thin-disk laser," Opt. Lett. 37, 1763-1765 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-10-1763


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