2.4 W room temperature continuous wave operation of distributed feedback quantum cascade lasers

Quanyong Lu, Y. Bai, N. Bandyopadhyay, Steven Boyd Slivken, Manijeh Razeghi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

We demonstrate high power continuous-wave room-temperature operation surface-grating distributed feedback quantum cascade lasers at 4.8 μm. High power single mode operation benefits from a combination of high-reflection and antireflection coatings. Maximum single-facet continuous-wave output power of 2.4 W and peak wall plug efficiency of 10% from one facet is obtained at 298 K. Single mode operation with a side mode suppression ratio of 30 dB and single-lobed far field without beam steering is observed.

Original languageEnglish (US)
Article number181106
JournalApplied Physics Letters
Volume98
Issue number18
DOIs
StatePublished - May 2 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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