High power, continuous wave, room temperature operation of λ ∼ 3.4 μm and λ ∼ 3.55 μm InP-based quantum cascade lasers

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

*Corresponding author for this work

Research output: Contribution to journalArticle

64 Scopus citations

Abstract

We report two highly strain-balanced InP-based AlInAs/GaInAs quantum cascade lasers emitting near 3.39 and 3.56 μm. A pulsed threshold current density of only 1.1 kA/cm 2 has been achieved at room temperature for both lasers with characteristic temperatures (T 0) of 166 K and 152 K, respectively. The slope efficiency is also relatively temperature insensitive with characteristic temperatures (T 1) of 116 K and 191 K, respectively. Continuous wave powers of 504 mW and 576 mW are obtained at room temperature, respectively. This was accomplished without buried ridge processing.

Original languageEnglish (US)
Article number212104
JournalApplied Physics Letters
Volume100
Issue number21
DOIs
StatePublished - May 21 2012

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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