Dresden 2026 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 22: Pattern Formation
DY 22.10: Talk
Tuesday, March 10, 2026, 12:00–12:15, ZEU/0118
Unified Simulation Framework for Multi-Soliton Dynamics in Femtosecond Lasers — •Julia A. Lang1, Julien Javaloyes2, Svetlana V. Gurevich3, and Georg Herink1 — 1University of Bayreuth, Germany — 2University of the Balearic Islands, Spain — 3University of Münster, Germany
Ultrafast lasers exhibit a rich variety of multi-pulse dynamics, strongly influenced by the underlying laser architecture and system-specific nonlinear effects.
In this contribution, we present a novel simulation approach that flexibly integrates diverse effects into a single, unified framework. A key feature of our model is the inclusion of full gain dynamics. This enables us to reproduce a wide range of experimentally observed soliton interactions, including harmonic mode-locking in erbium fiber lasers [1], the formation of soliton molecules via delayed feedback [2] or Raman-induced soliton molecules in Ti:sapphire lasers [2].
We introduce a classification of characteristic inter-soliton trajectories by attributing hierarchies of critical weights to nonlinear effects. The resultant classification provides deeper insights into the origins of multi-pulse interactions and enables novel approaches for harnessing multi-soliton applications.
[1] Lang JA et al. Sci Adv. 2024;10(2):eadk2290.
[2] Nimmesgern L et al. Optica. 2021;8(10):1334.
[3] Völkel A et al. Nat Commun. 2022;13(1):2066.
Keywords: Soliton Interactions; Nonlinear Effects; Soliton Molecules; Harmonic Mode-Locking; Multi-Pulse Dynamics