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Experimental observation of spontaneous emission of space-time wavepacket in a multimode optical fiber

arXiv.org, 2022-08

2022. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;http://arxiv.org/licenses/nonexclusive-distrib/1.0 ;EISSN: 2331-8422 ;DOI: 10.48550/arxiv.2208.06598

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  • Title:
    Experimental observation of spontaneous emission of space-time wavepacket in a multimode optical fiber
  • Author: Stefańska, Karolina ; Béjot, Pierre ; Tarnowski, Karol ; Kibler, Bertrand
  • Subjects: Broadband ; Intermodal ; Optical fibers ; Phase matching ; Physics - Optics ; Relativity ; Spontaneous emission ; Wave dispersion ; Wave packets ; Wave propagation
  • Is Part Of: arXiv.org, 2022-08
  • Description: We provide a complete analysis, from theory to experiment, of the spontaneous emergence of a discretized conical wave of X-type (i.e., a localized 2D+1 space-time wavepacket) when an intense ultrashort pulse nonlinearly propagates in a multimode fiber. In particular, we reveal that this spatiotemporal phenomenon corresponds to broadband intermodal dispersive wave emission from an unsteady localized wave structure formed during nonlinear propagation. Theoretical phase-matching predictions are experimentally and numerically confirmed in a commercially-available step-index multimode fiber. Our results provide a general understanding of phase-matched radiations emitted by nonlinear waves in multidimensional dispersive optical system.
  • Publisher: Ithaca: Cornell University Library, arXiv.org
  • Language: English
  • Identifier: EISSN: 2331-8422
    DOI: 10.48550/arxiv.2208.06598
  • Source: Freely Accessible Journals
    arXiv.org
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
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