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Proceedings Paper

Single-mode InP-based quantum cascade lasers for applications in trace-gas sensing
Author(s): Christian Mann; Quankui Yang; Frank Fuchs; Wolfgang Bronner; Klaus Köhler; Thomas Beyer; Marcus Braun; Armin Lambrecht
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Paper Abstract

We present pulsed operation of index-coupled distributed feedback quantum cascade lasers based on the GaInAs/AlInAs/InP materials system emitting at a wavelength around 5.4 μm. The emission is single mode in the entire investigated temperature range between 240K and 350K with a side mode suppression ratio larger than 27 dB. These devices are employed in a fast gas detection experiment for the quantitative detection of nitric oxide. With the present measurement system minimum noise equivalent concentrations between 16.7 ppbv and 23.3 ppbv are obtained, corresponding to minimum detectable optical densities between 4.7•10-5 and 6.5•10-5.

Paper Details

Date Published: 11 May 2004
PDF: 11 pages
Proc. SPIE 5365, Novel In-Plane Semiconductor Lasers III, (11 May 2004); doi: 10.1117/12.528964
Show Author Affiliations
Christian Mann, Fraunhofer-Institut fur Angewandte Festkoerperphysik (Germany)
Quankui Yang, Fraunhofer-Institut fur Angewandte Festkoerperphysik (Germany)
Frank Fuchs, Fraunhofer-Institut fur Angewandte Festkoerperphysik (Germany)
Wolfgang Bronner, Fraunhofer-Institut fur Angewandte Festkoerperphysik (Germany)
Klaus Köhler, Fraunhofer-Institut fur Angewandte Festkoerperphysik (Germany)
Thomas Beyer, Fraunhofer-Institut fur Physikalische Messtechnik (Germany)
Marcus Braun, Fraunhofer-Institut fur Physikalische Messtechnik (Germany)
Armin Lambrecht, Fraunhofer-Institut fur Physikalische Messtechnik (Germany)

Published in SPIE Proceedings Vol. 5365:
Novel In-Plane Semiconductor Lasers III
Claire F. Gmachl; David P. Bour, Editor(s)

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