Buried DFB gratings floating in AlGaAs with low oxygen contamination enable high power and efficiency DFB lasers
C.M. Schultz, P. Crump, A. Maaßdorf, O. Brox, F. Bugge, A. Mogilatenko, H. Wenzel, S. Knigge, B. Sumpf, M. Weyers and G. Erbert
Published in:
IEEE Summer Topical - High-Power Semiconductor Laser, Seattle, USA, Jul 9-11, pp. 59-60 (2012).
Abstract:
We report a novel design and fabrication technique for buried overgrown DFB gratings floating in AlGaAs. In-situ etching enables low oxygen contamination and results in > 60% efficient and 10W reliable high power DFB lasers.
Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
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