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High-Brightness Nanosecond-Pulse Operation From Tapered-Ridge-Waveguide Lasers

A. Zeghuzi,  Christopher, A. Klehr, J.-P. Koester, H. Wenzel, and A. Knigge

Published in:

IEEE Photonics Technol. Lett., vol. 33, no. 3, pp. 151-154 (2021).

Abstract:

Carrier-induced anti-guiding effects emerging at extremely high injection current densities under short-pulse operation necessitate lateral-waveguide design considerations, that differ from those required when continuous-wave operation is desired. Here, we investigate variations of the lateral index-guiding trench design to achieve an excellent brightness value of 27.4 Wmm-1mrad-1 from tapered-ridge-waveguide lasers with more than 18 W output power under 3.3 ns long pulse operation.

Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, 12489 Berlin, Germany

Keywords:

Laser beams, Indexes, Power generation, Optical pulses, Laser modes, Semiconductor lasers, Pulse measurements.

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