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High-power, continuous-wave operation of distributed-feedback quantum-cascade lasers at lambda~7.8  µm

Appl. Phys. Lett. 89, 251119 (2006); doi:10.1063/1.2408639

Published 21 December 2006

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S. R. Darvish, W. Zhang, A. Evans, J. S. Yu, S. Slivken, and M. Razeghi
Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208
The authors present high-power continuous-wave (cw) operation of distributed-feedback quantum-cascade lasers. Continuous-wave output powers of 56  mW at 25  °C and 15  mW at 40  °C are obtained. Single-mode emission near 7.8  µm with a side-mode suppression ratio of >=30  dB and a tuning range of 2.83  cm−1 was obtained between 15 and 40  °C. The device exhibits no beam steering with a full width at half maximum of 27.4° at 25  °C in cw mode. ©2006 American Institute of Physics
History: Received 19 July 2006; accepted 10 November 2006; published 21 December 2006
Permalink: http://link.aip.org/link/?APPLAB/89/251119/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.55.Px
    Semiconductor lasers; laser diodes
  • 42.60.By
    Design of specific laser systems
  • 42.60.Fc
    Laser beam modulation, tuning, and mode locking
  • YEAR: 2006

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PUBLICATION DATA

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