Influence of Nonlinear Effects on the Characteristics of Pulsed High-Power BA DBR Lasers

A. Zeghuzi1, M. Radziunas2, A.&nbnsp;Klehr1, H.-J Wünsche1,2, H. Wenzel1 and A. Knigge1

Published in:

17th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD 2017), Copenhagen, Denmark, Jul. 24-28, pp. 233-234 (2017).

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Abstract:

We analyze theoretically the influence of nonlinear effects such as spatial holeburning, 2-photon absorption and gain compression on the power-current and beam characteristics of a high-power broad-area distributed Bragg reflector laser with a stripe width of 50 µm operated in pulsed mode. At high injection currents of up to 100 A spatial holeburning, 2-photon absorption and gain compression not only reduce the output power by more than one half but also lead to a shift of the peaks of the lateral near field from the injection stripe center to the edges thus reducing the beam quality.

1 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany
2 Weierstrass Institute for Applied Analysis and Stochastics, Mohrenstrasse 39, 10117 Berlin, Germany