17 November 2005 Single mode quantum cascade lasers
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Abstract
In this paper we present single mode quantum cascade lasers (QCLs) based on the GaAs and the InP material systems. We show results for first- and second-order distributed feedback (DFB) QC lasers with surface gratings. The InP based lasers are grown by metalorganic vapor phase epitaxy (MOVPE) and show single mode continuous wave emission up to 200 K. In pulsed operation we achieved single mode surface emission peak output powers exceeding 1 Watt at room temperature. The presented GaAs/AlGaAs laser features an air/AlGaAs waveguide, combined with a second-order distributed feedback grating. That laser shows 3 Watts of single mode output power via the surface at 78 K.
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M. Austerer, C. Pflügl, S. Golka, S. Schartner, W. Schrenk, R. P. Green, L. R. Wilson, J. W. Cockburn, A. B. Krysa, J. S. Roberts, G. Strasser, "Single mode quantum cascade lasers", Proc. SPIE 6010, Infrared to Terahertz Technologies for Health and the Environment, 601002 (17 November 2005); doi: 10.1117/12.630501; https://doi.org/10.1117/12.630501
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