BPCPPDYSOE21 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 20: Nonlinear Dynamics 1 - organized by Azam Gholami (Göttingen)
DY 20.1: Vortrag
Dienstag, 23. März 2021, 09:00–09:20, DYc
Discrete light bullets in passively mode-locked semiconductor lasers — •Thomas Seidel1,2, Svetlana V. Gurevich2, and Julien Javaloyes1 — 1Dpt. de Física, Universitat de les Illes Balears & IAC-3, Campus UIB, E-07122 Palma de Mallorca, Spain — 2Institute for Theoretical Physics & Center for Nonlinear Science (CeNoS), University of Münster, Schlossplatz 2, 48149 Münster, Germany
We study the emergence and stability of discrete light bullets in the output of a passively mode-locked semiconductor laser array coupled to a distant saturable absorber. First, we investigate the dynamics of the tranverse field which can be modeled by a discretised version of the generalised Rosanov equation and next, we also include the longitudinal direction and thus, show the existence of three-dimensional dissipative localized structures with one discrete (transverse) and two continuous (longitudinal) directions. In both situations, we observe multistability between solution branches consisting of a different number of lasing lasers by numerical time integration. For the transverse case, a detailed bifurcation analysis by means of path continuation was conducted in order to study the transition between different solution branches. Further, the existence of drifting solitons is demonstrated for both bright and dark localized structures.