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Temperature dependent characteristics of lambda~3.8  µm room-temperature continuous-wave quantum-cascade lasers

Appl. Phys. Lett. 88, 251118 (2006); doi:10.1063/1.2216024

Published 23 June 2006

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J. S. Yu, A. Evans, S. Slivken, S. R. Darvish, and M. Razeghi
Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208
Temperature dependent characteristics of lambda~3.8  µm quantum-cascade lasers (QCLs) operating up to 318  K in continuous-wave (cw) mode are reported. A high-reflectivity coated 11.5-µm-wide and 4-mm-long epilayer-down bonded QCL using a diamond submount shows a considerable improved cw operation with an output power of 143  mW and a threshold current density of 1.51  kA/cm2 at 298  K. The temperature dependence on optical and electrical performances of the QCLs with respect to the output power, slope efficiency, threshold current/voltage, turn-on voltage, differential series resistance, and emission wavelength are investigated systematically above liquid nitrogen temperature. ©2006 American Institute of Physics
History: Received 6 March 2006; accepted 5 May 2006; published 23 June 2006
Permalink: http://link.aip.org/link/?APPLAB/88/251118/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.55.Px
    Semiconductor lasers; laser diodes
  • YEAR: 2006

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (9)
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