Dynamics of distorted and undistorted soliton molecules in a mode-locked fiber laser

J. Igbonacho, K. Nithyanandan, K. Krupa, P. Tchofo Dinda, P. Grelu, and A. B. Moubissi
Phys. Rev. A 99, 063824 – Published 19 June 2019

Abstract

Recent developments in real-time ultrafast measurement techniques have enabled us to prove experimentally that soliton molecules execute internal motions with some aspects similar to those of a matter molecule. Such an analogy between the dynamics of soliton molecules and the dynamics of matter molecules is based on the assumption that the dissipative solitons constituting a molecule are rigid entities sharing a common profile. Whereas this assumption drastically reduces the number of degrees of freedom, it does not hold true in general and we demonstrate that it overlooks some of the essential dynamical features of the soliton molecule. We present a theoretical study based on the principle that the different pulse constituents of a soliton molecule are deformable entities. Specifically, by using of a collective coordinate approach to investigate bi- and trisoliton molecules, we reveal features such as symmetric or asymmetric distortions of their profiles, and energy exchange processes between them. This implies, in subsequent experiments, the use of characterization techniques that can be used to retrieve a larger number of degrees of freedom.

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  • Received 3 December 2018

DOI:https://doi.org/10.1103/PhysRevA.99.063824

©2019 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

J. Igbonacho1, K. Nithyanandan2, K. Krupa3, P. Tchofo Dinda1,*, P. Grelu1, and A. B. Moubissi4

  • 1Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS, Université de Bourgogne–Franche-Comté, 9 Avenue A. Savary, Boîte Postale 47870, 21078 Dijon Cedex, France
  • 2LIPhy Laboratoire Interdisciplinaire de Physique, UMR 5588 CNRS, Université Grenoble Alpes, Saint Martin d'Hères, France
  • 3Dipartimento di Ingegneria dell'Informazione, Università di Brescia, via Branze 38, 25123 Brescia, Italy
  • 4Département de Physique, Faculté des Sciences, Université des Sciences et Techniques de Masuku, Boîte Postale 943 Franceville, Gabon

  • *tchofo@u-bourgogne.fr

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Issue

Vol. 99, Iss. 6 — June 2019

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