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

A. Evans*, S. R. Darvish, S. Slivken, J. Nguyen, Y. Bai, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticle

130 Scopus citations

Abstract

The authors report on the development of λ∼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.

Original languageEnglish (US)
Article number071101
JournalApplied Physics Letters
Volume91
Issue number7
DOIs
StatePublished - Aug 24 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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