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Buried heterostructure quantum cascade lasers with high continuous-wave wall plug efficiency

Appl. Phys. Lett. 91, 071101 (2007); doi:10.1063/1.2770768

Published 13 August 2007

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A. Evans, S. R. Darvish, S. Slivken, J. Nguyen, Y. Bai, and M. Razeghi
Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208
The authors report on the development of lambda~4.7  µm strain-balanced InP-based quantum cascade lasers with high wall plug efficiency and room temperature continuous-wave operation. The use of narrow-ridge buried heterostructure waveguides and thermally optimized packaging is presented. Over 9.3% wall plug efficiency is reported at room temperature from a single device producing over 0.675  W of continuous-wave output power. Wall plug efficiencies greater than 18% are also reported for devices at a temperature of 150  K, with continuous-wave output powers of more than 1  W. ©2007 American Institute of Physics
History: Received 18 June 2007; accepted 20 July 2007; published 13 August 2007
Permalink: http://link.aip.org/link/?APPLAB/91/071101/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.55.Px
    Semiconductor lasers; laser diodes
  • YEAR: 2007

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (10)
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