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Proceedings Paper

Mid-IR intersubband quantum cascade lasers
Author(s): Carlo Sirtori; Federico Capasso; Jerome Faist; Alfred Y. Cho; Philippe Collot; Vincent Berger; Julien Nagle
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Paper Abstract

Quantum cascade lasers are new light sources in the mid- infrared (3.5 - 12 micrometer), based on resonant tunneling and optical transitions between quantised conduction band states. Quantum engineering of electronic energy levels and tailoring of the wavefunctions are used to obtain population inversion and optimize the overall laser performance. Advanced structures from a point of view of the quantum design, such as two wavelength emitters, are presented. New waveguide confinement based on surface plasmon are also discussed. In this configuration it is shown that optical confinement can be achieved without the growth of cladding layers. The paper concludes with a general comparative discussion between GaAs/AlGaAs and GaInAs/AlInAs material systems for the new generations of quantum cascade lasers.

Paper Details

Date Published: 7 April 1998
PDF: 12 pages
Proc. SPIE 3284, In-Plane Semiconductor Lasers: from Ultraviolet to Mid-Infrared II, (7 April 1998); doi: 10.1117/12.304446
Show Author Affiliations
Carlo Sirtori, Thomson-CSF (France)
Federico Capasso, Lucent Technologies/Bell Labs. (United States)
Jerome Faist, Univ. of Neuchatel (Switzerland)
Alfred Y. Cho, Lucent Technologies/Bell Labs. (United States)
Philippe Collot, Thomson-CSF (France)
Vincent Berger, Thomson-CSF (France)
Julien Nagle, Thomson-CSF (France)


Published in SPIE Proceedings Vol. 3284:
In-Plane Semiconductor Lasers: from Ultraviolet to Mid-Infrared II
Hong K. Choi; Peter S. Zory, Editor(s)

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