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Proceedings Paper

Very high wall plug efficiency of quantum cascade lasers
Author(s): Y. Bai; S. Slivken; S. R. Darvish; M. Razeghi
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Paper Abstract

We demonstrate very high wall plug efficiency (WPE) of mid-infrared quantum cascade lasers (QCLs) in low temperature pulsed mode operation (53%), room temperature pulsed mode operation (23%), and room temperature continuous wave operation (18%). All of these values are the highest to date for any QCLs. The optimization of WPE takes the route of understanding the limiting factors of each sub-efficiency, exploring new designs to overcome the limiting factor, and constantly improving the material quality.

Paper Details

Date Published: 22 January 2010
PDF: 8 pages
Proc. SPIE 7608, Quantum Sensing and Nanophotonic Devices VII, 76080F (22 January 2010); doi: 10.1117/12.855650
Show Author Affiliations
Y. Bai, Northwestern Univ. (United States)
S. Slivken, Northwestern Univ. (United States)
S. R. Darvish, Northwestern Univ. (United States)
M. Razeghi, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 7608:
Quantum Sensing and Nanophotonic Devices VII
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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