Low-threshold 7.3 μm quantum cascade lasers grown by gas-source molecular beam epitaxy

S. Slivken*, A. Matlis, A. Rybaltowski, Z. Wu, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

A low-threshold 7.3 μm superlattice-based quantum cascade laser with 3.4 kA/cm2 threshold current density at 300 K is grown using gas-source molecular beam epitaxy. >100 mW peak output power is observed for a 20 μm×2 mm stripe with 153 mW/A slope efficiency of 650 mW/A and low sensitivity to temperature changes is evidenced at 210 K high characteristic temperature.

Original languageEnglish (US)
Pages (from-to)2758-2760
Number of pages3
JournalApplied Physics Letters
Volume74
Issue number19
DOIs
StatePublished - May 10 1999

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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