Room temperature continuous wave operation of quantum cascade lasers with 12.5% wall plug efficiency

Y. Bai*, Steven Boyd Slivken, S. R. Darvish, Manijeh Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticle

133 Scopus citations

Abstract

An InP based quantum cascade laser heterostructure emitting at 4.6 μm was grown with gas-source molecular beam epitaxy. The wafer was processed into a conventional double-channel ridge waveguide geometry with ridge widths of 19.7 and 10.6 μm without semi-insulating InP regrowth. An uncoated, narrow ridge device with a 4.8 mm cavity length was epilayer down bonded to a diamond submount and exhibits 2.5 W maximum output power with a wall plug efficiency of 12.5% at room temperature in continuous wave operation.

Original languageEnglish (US)
Article number021103
JournalApplied Physics Letters
Volume93
Issue number2
DOIs
StatePublished - Jul 14 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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