Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulses

Detalhes bibliográficos
Autor(a) principal: Souza,Fabrício M.
Data de Publicação: 1999
Outros Autores: Egues,J. Carlos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Physics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97331999000400047
Resumo: We investigate the ultrafast dynamics of an electron-hole plasma coupled to phonons in bulk GaAs excited with femtosecond laser pulses. Our approach is based on balance equations directly derived from the Boltzmann equation within the relaxation-time approximation. Poisson's equation together with a phenomenological driven-harmonic-oscillator equation supplements our description by accounting for time-dependent electric and vibrational fields. Our calculated internal fields show oscillations at frequencies characteristic of those of coupled plasmon-phonon modes. Our results are consistent with recent experimental data.
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spelling Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulsesWe investigate the ultrafast dynamics of an electron-hole plasma coupled to phonons in bulk GaAs excited with femtosecond laser pulses. Our approach is based on balance equations directly derived from the Boltzmann equation within the relaxation-time approximation. Poisson's equation together with a phenomenological driven-harmonic-oscillator equation supplements our description by accounting for time-dependent electric and vibrational fields. Our calculated internal fields show oscillations at frequencies characteristic of those of coupled plasmon-phonon modes. Our results are consistent with recent experimental data.Sociedade Brasileira de Física1999-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97331999000400047Brazilian Journal of Physics v.29 n.4 1999reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97331999000400047info:eu-repo/semantics/openAccessSouza,Fabrício M.Egues,J. Carloseng2001-02-23T00:00:00Zoai:scielo:S0103-97331999000400047Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2001-02-23T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulses
title Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulses
spellingShingle Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulses
Souza,Fabrício M.
title_short Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulses
title_full Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulses
title_fullStr Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulses
title_full_unstemmed Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulses
title_sort Dynamics of internal electric and phonon fields in n-GaAs pumped with ultrashort pulses
author Souza,Fabrício M.
author_facet Souza,Fabrício M.
Egues,J. Carlos
author_role author
author2 Egues,J. Carlos
author2_role author
dc.contributor.author.fl_str_mv Souza,Fabrício M.
Egues,J. Carlos
description We investigate the ultrafast dynamics of an electron-hole plasma coupled to phonons in bulk GaAs excited with femtosecond laser pulses. Our approach is based on balance equations directly derived from the Boltzmann equation within the relaxation-time approximation. Poisson's equation together with a phenomenological driven-harmonic-oscillator equation supplements our description by accounting for time-dependent electric and vibrational fields. Our calculated internal fields show oscillations at frequencies characteristic of those of coupled plasmon-phonon modes. Our results are consistent with recent experimental data.
publishDate 1999
dc.date.none.fl_str_mv 1999-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97331999000400047
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97331999000400047
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-97331999000400047
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Brazilian Journal of Physics v.29 n.4 1999
reponame:Brazilian Journal of Physics
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Brazilian Journal of Physics
collection Brazilian Journal of Physics
repository.name.fl_str_mv Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br
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