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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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InP/AlGaInP quantum dot semiconductor disk lasers for CW TEM00 emission at 716-755nm

Schlosser, Peter and Hastie, Jennifer and Calvez, Stephane and Krysa, Andrey and Dawson, Martin (2009) InP/AlGaInP quantum dot semiconductor disk lasers for CW TEM00 emission at 716-755nm. Optics Express, 17 (24). pp. 21782-21787. ISSN 1094-4087

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Abstract

Multiple layers of InP QDs, self-assembled during epitaxial growth, were incorporated into the active region of an (AlxGa1-x)(0.51)In0.49P based semiconductor disk laser with monolithic AlxGa1-xAs distributed Bragg reflector. Three gain structure samples were selected from the epitaxial wafer, bonded to single-crystal diamond heatspreaders and optically pumped at 532nm within a high finesse external laser cavity. Laser emission with peak wavelengths at 716, 729, and 739 nm, respectively, was achieved from the three samples; the latter demonstrating tuning from 729 to 755 nm. Maximum continuous wave output power of 52mW at 739nm was achieved with 0.2% output coupling; the threshold and slope efficiency were 220 mW and 5.7% respectively.