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Cascaded Raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers

Scientific reports, 2018-08, Vol.8 (1), p.12470-7, Article 12470 [Peer Reviewed Journal]

2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;The Author(s) 2018 ;ISSN: 2045-2322 ;EISSN: 2045-2322 ;DOI: 10.1038/s41598-018-30252-9 ;PMID: 30127452

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  • Title:
    Cascaded Raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers
  • Author: Teğin, Uğur ; Ortaç, Bülend
  • Subjects: Fibers ; Lasers ; Nanotechnology ; Nonlinear systems ; Repetition ; Scaling ; Silica
  • Is Part Of: Scientific reports, 2018-08, Vol.8 (1), p.12470-7, Article 12470
  • Description: A new method to generate multi-watt-level, octave-spanning, spectrally flat supercontinua stemmed from cascaded Raman scattering in graded-index multimode fibers is reported. Formation dynamics of supercontinua are investigated by studying the effect of fiber length and core size. High power handling capacity of the graded-index multimode fibers is demonstrated by power scaling experiments. Pump pulse repetition rate is scaled from kHz to MHz while pump pulse peak power remains same and ~4 W supercontinuum is achieved with 2 MHz pump repetition rate. To the best of our knowledge, this is the highest average power and repetition supercontinuum source ever reported based on a graded-index multimode silica fiber. Spatial properties of the generated supercontinua are measured and Gaussian-like beam profiles obtained for different wavelength ranges. Numerical simulations are performed to investigate underlying nonlinear dynamics in details and well-aligned with experimental observations.
  • Publisher: England: Nature Publishing Group
  • Language: English
  • Identifier: ISSN: 2045-2322
    EISSN: 2045-2322
    DOI: 10.1038/s41598-018-30252-9
    PMID: 30127452
  • Source: PubMed Central
    ProQuest Central
    DOAJ Directory of Open Access Journals
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