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Proceedings Paper

Beam steering in mid-infrared emitting quantum-cascade lasers
Author(s): Michel Kinzer; Frank Fuchs; Stefan Hugger; Borislav Hinkov; Wolfgang Bronner; Rainer Loesch; Rolf Aidam; Quankui Yang; Hans Dieter Tholl
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Paper Abstract

We report large beam steering effects, observed in the far-field pattern of InP-based mid-infrared quantum-cascade lasers along the slow axis. Changing the temperature by a few degrees around room temperature or varying the drive current strongly affects the lateral direction of the output beam. The position of maximum intensity in the far-field-distribution changes by more than 20°. This beam steering effect is correlated to changes in the lateral mode distribution, as revealed by time-resolved spectroscopy of the lasing spectrum.

Paper Details

Date Published: 12 October 2010
PDF: 8 pages
Proc. SPIE 7836, Technologies for Optical Countermeasures VII, 78360R (12 October 2010); doi: 10.1117/12.869851
Show Author Affiliations
Michel Kinzer, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Frank Fuchs, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Stefan Hugger, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Borislav Hinkov, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Wolfgang Bronner, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Rainer Loesch, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Rolf Aidam, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Quankui Yang, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Hans Dieter Tholl, Diehl BGT Defence GmbH & Co. KG (Germany)


Published in SPIE Proceedings Vol. 7836:
Technologies for Optical Countermeasures VII
David H. Titterton; Mark A. Richardson, Editor(s)

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