Wide wavelength tuning of GaAs Alx Ga1-x As bound-to-continuum quantum cascade lasers by aluminum content control

J. Heinrich, R. Langhans, M. S. Vitiello, G. Scamarcio, D. Indjin, C. A. Evans, Z. Ikonić, P. Harrison, S. Höfling, A. Forchel

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5 Citations (Scopus)

Abstract

Tuning of the emission wavelength in GaAs Alx Ga1-x As bound-to-continuum quantum cascade lasers with different Al mole fractions (x) is reported. By varying x in the range of 0.37-0.52, a shift of the emission wavelengths of over 4 μm has been observed. Using this method, laser action in the range of 11.2-15.3 μm at temperatures T260 K has been demonstrated with a record value of ∼340 K for GaAs based QCLs operating at 13.5 μm.

Original languageEnglish
Article number141111
JournalApplied Physics Letters
Volume92
Issue number14
DOIs
Publication statusPublished - 7 Apr 2008
Externally publishedYes

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