Continuous wave single mode operation of GaInAsSb/GaSb quantum well lasers emitting beyond 3 mu m

T. Lehnhardt*, M. Huemmer, K. Roessner, M. Mueller, Sven Höfling, A. Forchel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

We report on room temperature continuous wave single mode GaInAsSb-GaSb quantum well lasers emitting beyond 3 mu m. Quantum well strain and composition were carefully adjusted to enhance the hole confinement without increasing electron confinement in order to avoid inhomogeneous quantum well pumping. In order to realize single mode emission as prerequisite for gas sensing applications, distributed feedback lasers were fabricated. A record single mode emission cw wavelength of 3019 nm with a side mode suppression ratio of more than 30 dB has been obtained. The room temperature peak power output per facet exceeds 3 mW. (C) 2008 American Institute Of Physics.

Original languageEnglish
Article number183508
Number of pages3
JournalApplied Physics Letters
Volume92
Issue number18
DOIs
Publication statusPublished - 5 May 2008

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