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

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 handlin...

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Detalles Bibliográficos
Autores principales: Teğin, Uğur, Ortaç, Bülend
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6102226/
https://www.ncbi.nlm.nih.gov/pubmed/30127452
http://dx.doi.org/10.1038/s41598-018-30252-9
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author Teğin, Uğur
Ortaç, Bülend
author_facet Teğin, Uğur
Ortaç, Bülend
author_sort Teğin, Uğur
collection PubMed
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.
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spelling pubmed-61022262018-08-27 Cascaded Raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers Teğin, Uğur Ortaç, Bülend Sci Rep Article 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. Nature Publishing Group UK 2018-08-20 /pmc/articles/PMC6102226/ /pubmed/30127452 http://dx.doi.org/10.1038/s41598-018-30252-9 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Teğin, Uğur
Ortaç, Bülend
Cascaded Raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers
title Cascaded Raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers
title_full Cascaded Raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers
title_fullStr Cascaded Raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers
title_full_unstemmed Cascaded Raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers
title_short Cascaded Raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers
title_sort cascaded raman scattering based high power octave-spanning supercontinuum generation in graded-index multimode fibers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6102226/
https://www.ncbi.nlm.nih.gov/pubmed/30127452
http://dx.doi.org/10.1038/s41598-018-30252-9
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