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  4. Galilean-transformed solitons and supercontinuum generation in dispersive media
 
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Galilean-transformed solitons and supercontinuum generation in dispersive media

Citation Link: https://doi.org/10.15480/882.13981
Publikationstyp
Journal Article
Date Issued
2022-05-19
Sprache
English
Author(s)
He, Yuchen  
Ducrozet, Guillaume  
Hoffmann, Norbert  orcid-logo
Dudley, John M.  
Chabchoub, Amin  
Institut
Strukturdynamik M-14  
TORE-DOI
10.15480/882.13981
TORE-URI
http://hdl.handle.net/11420/13241
Journal
Physica D: Nonlinear phenomena  
Volume
439
Article Number
133342
Citation
Physica D: Nonlinear Phenomena 439: 133342 (2022-01-14)
Publisher DOI
10.1016/j.physd.2022.133342
Scopus ID
2-s2.0-85132568560
ArXiv ID
2201.05304v1
Publisher
Elsevier
The Galilean transformation is a universal operation connecting the coordinates of a dynamical system, which move relative to each other with a constant speed. In the context of exact solutions of the universal nonlinear Schrödinger equation (NLSE), inducing a Galilean velocity (GV) to the pulse involves a frequency shift to satisfy the symmetry of the wave equation. As such, the Galilean transformation has been deemed to be not applicable to wave groups in nonlinear dispersive media. In this paper, we demonstrate that in a wave tank generated Galilean transformed envelope and Peregrine solitons show clear variations from their respective pure dynamics on the water surface. The type of deviations depends on the sign of the GV and can be captured by the modified NLSE or the Euler equations. Moreover, we show that positive Galilean-translated envelope soliton pulses exhibit self-modulation. While designated GS and wave steepness values expedite multi-soliton dynamics, the strong focusing of such higher-order coherent waves inevitably lead to the generation of supercontinua as a result of soliton fission. We anticipate that kindred experimental and numerical studies might be implemented in other dispersive wave guides governed by nonlinearity.
Subjects
Galilei transformation
Solitons
Supercontinuum generation
Nonlinear Sciences - Pattern Formation and Solitons
Nonlinear Sciences - Pattern Formation and Solitons
Physics - Fluid Dynamics
DDC Class
600: Technik
More Funding Information
J.M.D. acknowledges support from the French National Research Agency : ANR-15-IDEX-0003 , ANR-17-EURE-0002 , ANR-20-CE30-0004 , ANR-21-ESRE-0040 .
Lizenz
https://creativecommons.org/licenses/by/4.0/
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