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DY: Fachverband Dynamik und Statistische Physik
DY 18: Delay and Feedback Dynamics
DY 18.3: Vortrag
Montag, 16. März 2020, 17:30–17:45, ZEU 147
Non-local effects in external cavity passively mode-locked lasers — •Jan Hausen1, Christian Schelte2,3, Julien Javaloyes2, Svetlana V. Gurevich2,3, and Kathy Lüdge1 — 1TU Berlin, Hardenbergstrasse 36, 10623 Berlin — 2Universitat de les Illes Balears, Cra. de Valldemossa, km 7.5. Palma (Illes Balears) — 3WWU Münster, Wilhelm-Klemm-Strasse 9, 48149 Münster
Asymmetrical geometries can improve the performances of passively mode-locked vertical external-cavity surface-emitting lasers and give rise to non-equidistant pulse patterns. We show that these geometries create non-local effects; by analyzing a previously developed delay differential equation model, we derive rigorously a Master equation from the pulse evolution that contains such non-local terms. Setting adequate boundary conditions, we extend our analysis to the dynamics of intermediate cavities (600ps), particularly relevant for high performance mode-locking. We study the influence of the non-locality stemming from the asymmetric position of the elements in the cavity and we recover the bifurcation structure of non-equidistant pulse patterns.