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Proceedings Paper

Polarization of eigenmodes and the effect on the anisotropic gain in laser structures on nonpolar and semipolar GaN
Author(s): Jens Rass; Tim Wernicke; Simon Ploch; Moritz Brendel; Andreas Kruse; Andreas Hangleiter; Wolfgang Scheibenzuber; Ulrich T. Schwarz; Markus Weyers; Michael Kneissl
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Paper Abstract

The resonator orientation of InGaN-based lasers on semipolar planes influences the optical polarization and the gain. We present gain measurements of semipolar (11-22) laser structures with differently oriented resonators and for various polarization states. The optical polarization state and the thresholds for lasers on different semipolar and nonpolar orientations are compared. The experimental results are accompanied by numerical calculations of the material gain as well as investigation of the surface morphology and resulting waveguide losses in dependence of the crystal orientation.

Paper Details

Date Published: 27 February 2012
PDF: 9 pages
Proc. SPIE 8262, Gallium Nitride Materials and Devices VII, 826218 (27 February 2012); doi: 10.1117/12.907865
Show Author Affiliations
Jens Rass, Technische Univ. Berlin (Germany)
Tim Wernicke, Technische Univ. Berlin (Germany)
Simon Ploch, Technische Univ. Berlin (Germany)
Moritz Brendel, Technische Univ. Braunschweig (Germany)
Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (Germany)
Andreas Kruse, Technische Univ. Braunschweig (Germany)
Andreas Hangleiter, Technische Univ. Braunschweig (Germany)
Wolfgang Scheibenzuber, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Ulrich T. Schwarz, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Markus Weyers, Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (Germany)
Michael Kneissl, Technische Univ. Berlin (Germany)
Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (Germany)

Published in SPIE Proceedings Vol. 8262:
Gallium Nitride Materials and Devices VII
Jen-Inn Chyi; Yasushi Nanishi; Hadis Morkoç; Joachim Piprek; Euijoon Yoon, Editor(s)

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