Long-wavelength high-power quantum fountain unipolar lasers in GaAs/AlGaAs quantum wells

Olivier Gauthier-Lafaye; Bruno Seguin-Roa; Francois H. Julien; Gottfried Strasser; Philippe Collot; Carlo Sirtori; Jean-Yves Duboz

doi:10.1117/12.361027

9 September 1999 Long-wavelength high-power quantum fountain unipolar lasers in GaAs/AlGaAs quantum wells

Olivier Gauthier-Lafaye, Bruno Seguin-Roa, Francois H. Julien, Gottfried Strasser, Philippe Collot, Carlo Sirtori, Jean-Yves Duboz

Author Affiliations +

Proceedings Volume 3828, Terahertz Spectroscopy and Applications II; (1999) https://doi.org/10.1117/12.361027
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

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.

Citation Download Citation

Olivier Gauthier-Lafaye, Bruno Seguin-Roa, Francois H. Julien, Gottfried Strasser, Philippe Collot, Carlo Sirtori, and Jean-Yves Duboz "Long-wavelength high-power quantum fountain unipolar lasers in GaAs/AlGaAs quantum wells", Proc. SPIE 3828, Terahertz Spectroscopy and Applications II, (9 September 1999); https://doi.org/10.1117/12.361027

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