Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers

The collapse of a laser beam propagating inside a hollow-core fiber is investigated by numerically solving different nonlinear propagation models. We have identified that the fiber confinement favors the spatial collapse, especially in case of pulses with the input peak power close to the critical v...

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Detalhes bibliográficos
Autores: Crego García, Aurora, Conejero Jarque, Enrique, San Román Álvarez de Lara, Julio
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Recursos:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/140295
Acesso em linha:http://hdl.handle.net/10366/140295
Access Level:acceso abierto
Palavra-chave:Nonlinear optics
Ultrafast photonics
2209 Óptica
2209.10 láseres
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spelling Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibersCrego García, AuroraConejero Jarque, EnriqueSan Román Álvarez de Lara, JulioNonlinear opticsUltrafast photonics2209 Óptica2209.10 láseresThe collapse of a laser beam propagating inside a hollow-core fiber is investigated by numerically solving different nonlinear propagation models. We have identified that the fiber confinement favors the spatial collapse, especially in case of pulses with the input peak power close to the critical value. We have also observed that when using pulses in the femtosecond range, the temporal dynamics plays an important role, activating the spatial collapse even for pulses with input peak powers below the critical value. The complex self-focusing dynamics observed in the region below the critical power depends on the temporal evolution of the pulse and, also, on the interaction between the different spatial modes of the hollow-core fiber.The authors thank support from Spanish Ministerio de Economía y Competitividad (FIS2016-75652-P) and from Junta de Castilla y León (SA287P18). A.C. is funded by the FPI grant program of Spanish Ministerio de Economía y Competitividad and European Social Fund (BES-2017-080280).201920192019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/140295reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésFIS2016-75652-PSA287P18BES-2017-080280info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1402952026-06-07T06:28:51Z
dc.title.none.fl_str_mv Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers
title Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers
spellingShingle Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers
Crego García, Aurora
Nonlinear optics
Ultrafast photonics
2209 Óptica
2209.10 láseres
title_short Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers
title_full Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers
title_fullStr Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers
title_full_unstemmed Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers
title_sort Influence of the spatial confinement on the self-focusing of ultrashort pulses in hollow-core fibers
dc.creator.none.fl_str_mv Crego García, Aurora
Conejero Jarque, Enrique
San Román Álvarez de Lara, Julio
author Crego García, Aurora
author_facet Crego García, Aurora
Conejero Jarque, Enrique
San Román Álvarez de Lara, Julio
author_role author
author2 Conejero Jarque, Enrique
San Román Álvarez de Lara, Julio
author2_role author
author
dc.subject.none.fl_str_mv Nonlinear optics
Ultrafast photonics
2209 Óptica
2209.10 láseres
topic Nonlinear optics
Ultrafast photonics
2209 Óptica
2209.10 láseres
description The collapse of a laser beam propagating inside a hollow-core fiber is investigated by numerically solving different nonlinear propagation models. We have identified that the fiber confinement favors the spatial collapse, especially in case of pulses with the input peak power close to the critical value. We have also observed that when using pulses in the femtosecond range, the temporal dynamics plays an important role, activating the spatial collapse even for pulses with input peak powers below the critical value. The complex self-focusing dynamics observed in the region below the critical power depends on the temporal evolution of the pulse and, also, on the interaction between the different spatial modes of the hollow-core fiber.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/140295
url http://hdl.handle.net/10366/140295
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv FIS2016-75652-P
SA287P18
BES-2017-080280
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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