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DY: Fachverband Dynamik und Statistische Physik

DY 6: Nonlinear Dynamics, Synchronization and Chaos

DY 6.2: Vortrag

Montag, 16. März 2020, 10:15–10:30, ZEU 147

Dynamics of discrete light bullets in passively mode-locked semiconductor lasers — •Thomas Seidel¹, Julien Javaloyes², and Svetlana Gurevich^1,3 — ¹Institute for Theoretical Physics, University of Münster, Wilhelm-Klemm-Straße 9, 48149 Münster, Germany — ²Departament de Física, Universitat de les Illes Balears, Carretera Valldemossa km 7.5, 07122 Palma, Spain — ³Center for Nonlinear Science (CeNoS), University of Münster, Corrensstraße 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. Fist, 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 find the presence of multistability between solution branches consisting of different numbers 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.