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Room temperature continuous wave operation of quantum cascade lasers with watt-level optical power

Appl. Phys. Lett. 92, 101105 (2008); doi:10.1063/1.2894569

Published 10 March 2008

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Y. Bai, S. R. Darvish, S. Slivken, W. Zhang, A. Evans, J. Nguyen, and M. Razeghi
Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208, USA
We demonstrate quantum cascade lasers at an emitting wavelength of 4.6  µm, which are capable of room temperature, high power continuous wave (cw) operation. Buried ridge geometry with a width of 9.8  µm was utilized. A device with a 3  mm cavity length that was epilayer-down bonded on a diamond submount exhibited a maximum output power of 1.3  W at room temperature in cw operation. The maximum output power at 80  K was measured to be 4  W, with a wall plug efficiency of 27%. ©2008 American Institute of Physics
History: Received 18 January 2008; accepted 18 February 2008; published 10 March 2008
Permalink: http://link.aip.org/link/?APPLAB/92/101105/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.55.Px
    Semiconductor lasers; laser diodes
  • YEAR: 2008

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (11)
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