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DY: Fachverband Dynamik und Statistische Physik

DY 18: Pattern Formation

DY 18.5: Vortrag

Dienstag, 18. März 2025, 15:00–15:15, H47

Numerical and Experimental Analysis of Multi-Soliton Interactions in Ultrafast Lasers — •Julia Lang and Georg Herink — Universität Bayreuth

Ultrafast lasers are excellent platforms for experimentally observing multi-soliton solutions of the nonlinear Schrödinger equation in real-time. Interactions between solitons are often neglected in common pulse propagation models. However, they generate a variety of nonlinear dynamics, which manifest in distinct soliton trajectories observed via real-time spectral interferometry. Here, we report on soliton interactions in two different classes of widely established laser systems, namely Kerr-lens mode-locked Ti:sapphire [1] and SESAM mode-locked Er:fiber [2] lasers. Laser system-specific components result in virtually opposite behaviour, i.e., in soliton attraction, repulsion and/or binding. We discuss their representations in the generalized Schrödinger equation and present one-to-one correspondences between experiment and theory.

[1] A Völkel et al. Intracavity Raman scattering couples soliton molecules with terahertz phonons. Nat Commun. 2022;13(1):2066.

[2] J. A. Lang et al. Controlling intracavity dual-comb soliton motion in a single-fiber laser. Sci Adv. 2024;10(2):eadk2290.

Keywords: Soliton; Laser system; Ultrafast dynamics