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Proceedings Paper

The quantum cascade lasers: the semiconductor solution for lasers in the 3-5µm wavelength region
Author(s): Carlo Sirtori; Xavier Marcadet; Michel Garcia; Alexei N. Baranov; Roland Teissier; Davide Barate; Aurore Vicet; Claude L. Alibert; John W. Cockburn; Dmitri Revin
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Paper Abstract

The quantum cascade laser is a semiconductor light source based on resonant tunnelling and optical transitions between quantised conduction band states. In these devices the principles of operation are not based on the physical properties of the constituent materials, but arise from the layer sequence forming the heterostructure. The quantum design and the control of the layer thickness, down to an atomic mono-layer, allows one to ascribe into a semiconductor crystal, artificial potentials with the desired electronic energy levels and wavefunctions. In recent years the performance of quantum cascade lasers has improved markedly and this semiconductor technology is now an attractive choice for the fabrication of mid-far infrared lasers in a very wide spectral range (3.5-160 μm). At present, the best performances are reached at wavelength between 5-10 μm, but recent results on new material systems with deeper quantum wells are indicating that this technology will be soon available also in the 3-5 μm spectral region.

Paper Details

Date Published: 29 December 2004
PDF: 11 pages
Proc. SPIE 5615, Technologies for Optical Countermeasures, (29 December 2004); doi: 10.1117/12.578274
Show Author Affiliations
Carlo Sirtori, Univ. Denis Diderot (France)
Thales Research & Technology (France)
Xavier Marcadet, Thales Research & Technology (France)
Michel Garcia, Thales Research & Technology (France)
Alexei N. Baranov, CEM2, Univ. Montpellier II (France)
Roland Teissier, CEM2, Univ. Montpellier II (France)
Davide Barate, CEM2, Univ. Montpellier II (France)
Aurore Vicet, CEM2, Univ. Montpellier II (France)
Claude L. Alibert, CEM2, Univ. Montpellier II (France)
John W. Cockburn, Univ. of Sheffield (United Kingdom)
Dmitri Revin, Univ. of Sheffield (United Kingdom)

Published in SPIE Proceedings Vol. 5615:
Technologies for Optical Countermeasures
David H. Titterton, Editor(s)

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