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Proceedings Paper

Long-wavelength high-power quantum fountain unipolar lasers in GaAs/AlGaAs quantum wells
Author(s): Olivier Gauthier-Lafaye; Bruno Seguin-Roa; Francois H. Julien; Gottfried Strasser; Philippe Collot; Carlo Sirtori; Jean-Yves Duboz
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Paper Abstract

High-power unipolar GaAs/AlGaAs lasers emitting in the 14-15 micrometers wavelength range under optical pumping by a pulsed CO2 laser are investigated. Operation of edge lasers with side-facet pumping gas well as broad-area lasers with normal-incidence pumping is demonstrated. We show that record high optical powers can be obtained from these quantum fountain unipolar lasers. Optical powers per facet as high as 6.6 W for edge lasers and 7.8 W for broad-area lasers are achieved with TM00 mode emission. Extended tunability of the lasing wavelength, (Delta) (lambda) /(lambda) approximately equals 2.5 percent, is observed by varying the pump wavelength. Operating temperatures as high as 137 K are presently achieved. Application of quantum fountain unipolar lasers to CO2 gas detection is demonstrated.

Paper Details

Date Published: 9 September 1999
PDF: 11 pages
Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); doi: 10.1117/12.361027
Show Author Affiliations
Olivier Gauthier-Lafaye, Univ. of Paris-Sud (France)
Bruno Seguin-Roa, Univ. of Paris-Sud (France)
Francois H. Julien, Univ. of Paris-Sud (France)
Gottfried Strasser, Technische Univ. Wien (Austria)
Philippe Collot, Thomson-CSF (France)
Carlo Sirtori, Thomson-CSF (France)
Jean-Yves Duboz, Thomson-CSF (France)

Published in SPIE Proceedings Vol. 3828:
Terahertz Spectroscopy and Applications II
J. Martyn Chamberlain, Editor(s)

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