Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scattering
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10071/23616 |
Resumo: | Brillouin amplification of laser pulses in plasma has been shown to be a promising approach to produce picosecond pulses of petawatt power. A key challenge is preservation of the quality of the amplified pulse, which requires control of parasitic instabilities that accompany the amplification process. At high plasma densities (>cr/4), ponderomotive filamentation has been identified as the biggest threat to the integrity of the amplifying pulse. It has therefore been proposed to perform Brillouin scattering at densities below to reduce the influence of filamentation. However, parasitic Raman scattering can become a problem at such densities, contrary to densities above where it is forbidden. In this paper, we investigate the influence of parasitic Raman scattering on Brillouin amplification at densities below . We expose the specific problems posed by both Raman backward and forward scattering, and how both types of scattering can be mitigated, leading to an increased performance of the Brillouin amplification process. |
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Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scatteringBrillouin amplificationHigh energy density physicsLaser-plasma interactionParametric instabilitiesBrillouin amplification of laser pulses in plasma has been shown to be a promising approach to produce picosecond pulses of petawatt power. A key challenge is preservation of the quality of the amplified pulse, which requires control of parasitic instabilities that accompany the amplification process. At high plasma densities (>cr/4), ponderomotive filamentation has been identified as the biggest threat to the integrity of the amplifying pulse. It has therefore been proposed to perform Brillouin scattering at densities below to reduce the influence of filamentation. However, parasitic Raman scattering can become a problem at such densities, contrary to densities above where it is forbidden. In this paper, we investigate the influence of parasitic Raman scattering on Brillouin amplification at densities below . We expose the specific problems posed by both Raman backward and forward scattering, and how both types of scattering can be mitigated, leading to an increased performance of the Brillouin amplification process.IOP Publishing Ltd2021-12-02T14:03:31Z2021-01-01T00:00:00Z20212021-12-02T14:03:06Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10071/23616eng0741-333510.1088/1361-6587/ac2cd9Trines, R. M. G.Alves, E. P.Humphrey, K. A.Bingham, R.Cairns, R. A.Fiuza, F.Fonseca, R. A.Silva, L. O.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-09T17:59:11Zoai:repositorio.iscte-iul.pt:10071/23616Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:31:00.973393Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scattering |
title |
Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scattering |
spellingShingle |
Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scattering Trines, R. M. G. Brillouin amplification High energy density physics Laser-plasma interaction Parametric instabilities |
title_short |
Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scattering |
title_full |
Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scattering |
title_fullStr |
Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scattering |
title_full_unstemmed |
Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scattering |
title_sort |
Boosting the performance of Brillouin amplification at sub-quarter-critical densities via reduction of parasitic Raman scattering |
author |
Trines, R. M. G. |
author_facet |
Trines, R. M. G. Alves, E. P. Humphrey, K. A. Bingham, R. Cairns, R. A. Fiuza, F. Fonseca, R. A. Silva, L. O. |
author_role |
author |
author2 |
Alves, E. P. Humphrey, K. A. Bingham, R. Cairns, R. A. Fiuza, F. Fonseca, R. A. Silva, L. O. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Trines, R. M. G. Alves, E. P. Humphrey, K. A. Bingham, R. Cairns, R. A. Fiuza, F. Fonseca, R. A. Silva, L. O. |
dc.subject.por.fl_str_mv |
Brillouin amplification High energy density physics Laser-plasma interaction Parametric instabilities |
topic |
Brillouin amplification High energy density physics Laser-plasma interaction Parametric instabilities |
description |
Brillouin amplification of laser pulses in plasma has been shown to be a promising approach to produce picosecond pulses of petawatt power. A key challenge is preservation of the quality of the amplified pulse, which requires control of parasitic instabilities that accompany the amplification process. At high plasma densities (>cr/4), ponderomotive filamentation has been identified as the biggest threat to the integrity of the amplifying pulse. It has therefore been proposed to perform Brillouin scattering at densities below to reduce the influence of filamentation. However, parasitic Raman scattering can become a problem at such densities, contrary to densities above where it is forbidden. In this paper, we investigate the influence of parasitic Raman scattering on Brillouin amplification at densities below . We expose the specific problems posed by both Raman backward and forward scattering, and how both types of scattering can be mitigated, leading to an increased performance of the Brillouin amplification process. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-02T14:03:31Z 2021-01-01T00:00:00Z 2021 2021-12-02T14:03:06Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10071/23616 |
url |
http://hdl.handle.net/10071/23616 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0741-3335 10.1088/1361-6587/ac2cd9 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
IOP Publishing Ltd |
publisher.none.fl_str_mv |
IOP Publishing Ltd |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799134872208408576 |