Regensburg 2019 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 35: HL Poster II

HL 35.56: Poster

Mittwoch, 3. April 2019, 17:30–20:00, Poster E

Simulation of mode competition phenomena in (Al,In)GaN laser diodes — •Eduard Kuhn, Lukas Uhlig, Matthias Wachs, Ulrich T. Schwarz, and Angela Thränhardt — Institut für Physik, Technische Universität Chemnitz

Experiments show interesting mode competition phenomena in laser diodes. For example streak camera measurements show cyclic mode hopping, where the currently active mode changes from lower to higher wavelengths. This can be explained by third order effects such as beating vibrations of the carrier density. In this work we describe these mode dynamics using a model based on the semiconductor Bloch equations and discuss the influence of the Hartree-Fock terms and different dephasing terms.