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

S. R. Darvish*, W. Zhang, A. Evans, J. S. Yu, S. Slivken, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number251119
JournalApplied Physics Letters
Volume89
Issue number25
DOIs
StatePublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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