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Proceedings Paper

Recent advances in quantum cascade laser research and novel applications
Author(s): Daniel Hofstetter; Mattias Beck; Stephane Blaser; Thierry Aellen; Jerome Faist; Ursula Oesterle; Marc Ilegems; Emilio Gini; Hans M. Melchior
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Paper Abstract

Continuous wave (CW) operation of quantum cascade lasers is reported up to a temperature of 312 K. The junction down mounted devices were designed as buried heterostructure lasers with high-reflection coatings on both facets. This resulted in CW operation at an emission wavelength of 9.1μm with an optical power ranging from 17 mW at 293 K to 3 mW at 312 K. A distributed feedback type device was fabricated and tested as well. It showed CW singlemode operation up to 260 K. These results demonstrate the potential of quantum cascade lasers as CW mid-infrared light sources for high-resolution spectroscopy and free space telecommunication systems.

Paper Details

Date Published: 3 July 2003
PDF: 9 pages
Proc. SPIE 4995, Novel In-Plane Semiconductor Lasers II, (3 July 2003); doi: 10.1117/12.475746
Show Author Affiliations
Daniel Hofstetter, Univ. Neuchatel (Switzerland)
Mattias Beck, Univ. Neuchatel (Switzerland)
Stephane Blaser, Univ. Neuchatel (Switzerland)
Thierry Aellen, Univ. Neuchatel (Switzerland)
Jerome Faist, Univ. Neuchatel (Switzerland)
Ursula Oesterle, Ecole Polytechnique Federale de Lausanne (Switzerland)
Marc Ilegems, Ecole Polytechnique Federale de Lausanne (Switzerland)
Emilio Gini, ETH Zurich (Switzerland)
Hans M. Melchior, ETH Zurich (Switzerland)


Published in SPIE Proceedings Vol. 4995:
Novel In-Plane Semiconductor Lasers II
Claire F. Gmachl; David P. Bour, Editor(s)

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