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Proceedings Paper

Spectral tuning and mode competition of quantum cascade lasers studied by time-resolved Fourier transform spectroscopy
Author(s): F. Fuchs; B. Kirn; Ch. Mann; Q. Yang; W. Bronner; B. Raynor; K. Köhler; J. Wagner
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Paper Abstract

We present a study of the spectral characteristics of Fabry-Perot quantum cascade lasers in pulsed mode operation applying a time resolution of 3 ns in combination with a high spectral resolution of 0.02 cm-1. With this technique the laser spectra were investigated applying pulse lengths ranging between 100 ns and 20 μs and duty cycles between 0.01% and 10%. Depending on the current density and operation temperature, the spectra exhibit complex line patterns, which indicate mode competition caused by gain saturation effects.

Paper Details

Date Published: 17 October 2006
PDF: 9 pages
Proc. SPIE 6386, Optical Methods in the Life Sciences, 63860I (17 October 2006); doi: 10.1117/12.685379
Show Author Affiliations
F. Fuchs, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
B. Kirn, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Ch. Mann, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
Q. Yang, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
W. Bronner, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
B. Raynor, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
K. Köhler, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)
J. Wagner, Fraunhofer-Institut für Angewandte Festkörperphysik (Germany)


Published in SPIE Proceedings Vol. 6386:
Optical Methods in the Life Sciences
Alexey A. Belyanin; Mostafa Analoui; Rebekah Anna Drezek; Claire F. Gmachl, Editor(s)

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