High-performance quantum cascade lasers (λ~11 μm) operating at high temperature ( T≥425 K)

A. Tahraoui*, A. Matlis, S. Slivken, J. Diaz, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

We report record-low threshold current density and high output power for λ∼11μm Al0.48In0.52As/Ga0.47In0.53As quantum cascade lasers operating up to 425 K. The threshold current density is 1.1, 3.83, and 7.08 kA/cm2 at 80, 300, and 425 K, respectively, for 5 μs pulses at a 200 Hz repetition rate. The cavity length is 3 mm with a stripe width of 20 μm. The maximum peak output power per facet is 1 W at 80 K, 0.5 W at 300 K, and more than 75 mW at 425 K. The characteristic temperature of these lasers is 174 K between 80 and 300 K and 218 K in the range of 300-425 K.

Original languageEnglish (US)
Pages (from-to)416-418
Number of pages3
JournalApplied Physics Letters
Volume78
Issue number4
DOIs
StatePublished - Jan 22 2001

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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