Effect of the frequency chirp on laser wakefield acceleration
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://ciencia.iscte-iul.pt/public/pub/id/11212 http://hdl.handle.net/10071/7099 |
Resumo: | The role of laser frequency chirps in the laser wakefield accelerator is examined. We show that in the linear regime, the evolution of the laser pulse length is affected by the frequency chirp, and that positive (negative) chirp compresses (stretches) the laser pulse, thereby increasing (decreasing) the peak vector potential and wakefield amplitude. In the blowout regime, the frequency chirp can be used to fine-tune the localized etching rates at the front of the laser. In our simulations, chirped laser pulses can lead to 15% higher self-trapped electrons and 10% higher peak energies as compared to the transform-limited pulse. Chirps may be used to control the phase velocity of the wake and to relax the self-guiding conditions at the front of the laser. Our predictions are confirmed by multi-dimensional particle-in-cell simulations with OSIRIS. |
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Effect of the frequency chirp on laser wakefield accelerationThe role of laser frequency chirps in the laser wakefield accelerator is examined. We show that in the linear regime, the evolution of the laser pulse length is affected by the frequency chirp, and that positive (negative) chirp compresses (stretches) the laser pulse, thereby increasing (decreasing) the peak vector potential and wakefield amplitude. In the blowout regime, the frequency chirp can be used to fine-tune the localized etching rates at the front of the laser. In our simulations, chirped laser pulses can lead to 15% higher self-trapped electrons and 10% higher peak energies as compared to the transform-limited pulse. Chirps may be used to control the phase velocity of the wake and to relax the self-guiding conditions at the front of the laser. Our predictions are confirmed by multi-dimensional particle-in-cell simulations with OSIRIS.IOP Publishing Ltd2014-05-06T14:22:30Z2012-01-01T00:00:00Z20122014-05-06T14:19:55Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://ciencia.iscte-iul.pt/public/pub/id/11212http://hdl.handle.net/10071/7099eng1367-263010.1088/1367-2630/14/2/023057Pathak, V. B.Vieira, J.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:RCAAP2023-11-09T17:31:06Zoai:repositorio.iscte-iul.pt:10071/7099Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:13:58.255047Repositório 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 |
Effect of the frequency chirp on laser wakefield acceleration |
title |
Effect of the frequency chirp on laser wakefield acceleration |
spellingShingle |
Effect of the frequency chirp on laser wakefield acceleration Pathak, V. B. |
title_short |
Effect of the frequency chirp on laser wakefield acceleration |
title_full |
Effect of the frequency chirp on laser wakefield acceleration |
title_fullStr |
Effect of the frequency chirp on laser wakefield acceleration |
title_full_unstemmed |
Effect of the frequency chirp on laser wakefield acceleration |
title_sort |
Effect of the frequency chirp on laser wakefield acceleration |
author |
Pathak, V. B. |
author_facet |
Pathak, V. B. Vieira, J. Fonseca, R. A. Silva, L. O. |
author_role |
author |
author2 |
Vieira, J. Fonseca, R. A. Silva, L. O. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Pathak, V. B. Vieira, J. Fonseca, R. A. Silva, L. O. |
description |
The role of laser frequency chirps in the laser wakefield accelerator is examined. We show that in the linear regime, the evolution of the laser pulse length is affected by the frequency chirp, and that positive (negative) chirp compresses (stretches) the laser pulse, thereby increasing (decreasing) the peak vector potential and wakefield amplitude. In the blowout regime, the frequency chirp can be used to fine-tune the localized etching rates at the front of the laser. In our simulations, chirped laser pulses can lead to 15% higher self-trapped electrons and 10% higher peak energies as compared to the transform-limited pulse. Chirps may be used to control the phase velocity of the wake and to relax the self-guiding conditions at the front of the laser. Our predictions are confirmed by multi-dimensional particle-in-cell simulations with OSIRIS. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01T00:00:00Z 2012 2014-05-06T14:22:30Z 2014-05-06T14:19:55Z |
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 |
https://ciencia.iscte-iul.pt/public/pub/id/11212 http://hdl.handle.net/10071/7099 |
url |
https://ciencia.iscte-iul.pt/public/pub/id/11212 http://hdl.handle.net/10071/7099 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1367-2630 10.1088/1367-2630/14/2/023057 |
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 |
instname_str |
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) |
repository.name.fl_str_mv |
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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1799134696628551680 |