Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization

Autores
Arbo, Diego; López, Sebastián David; Burgdörfer, Joachim
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Phase and time delays of atomic above-threshold ionization were recently experimentally explored in an ω-2ω setting [Zipp, Optica 1, 361 (2014)2334-253610.1364/OPTICA.1.000361]. The phases of wave packets ejected from argon by a strong 2ω pulse were probed as a function of the relative phase of a weaker ω probe pulse. Numerical simulations solving the time-dependent Schrödinger equation (TDSE) displayed a sensitive dependence of the doubly differential momentum distribution on the relative phase between the ω and 2ω fields. Moreover, a surprisingly strong variation of the extracted phase delays on the intensity of the probe pulse was found. We present a semiclassical strong-field description of the phase delays in the emission of electrons in an ω-2ω setting and apply it to atomic hydrogen. Nonperturbative effects in both the 2ω pump and the ω probe field are included. The semiclassical description allows tracing phase delays to path interferences between emission during different points in time of emission within the temporal unit cell of the two-color laser field. We find good agreement between the semiclassical saddle-point approximation, the full strong-field approximation (SFA), and previous results applicable in the perturbative limit of probe fields. We show that the RABBIT-like perturbative description of phase delays breaks down for stronger fields and higher-energy electron emission. In this regime, characterization of the ionization signal requires an entire ensemble of phase delays δi(E) with i=1,2,... the difference in photon numbers of the strong 2ω field involved in the interfering paths. Comparison between SFA and TDSE calculations reveals the influence of the Coulomb field even in this strong-field scenario.
Fil: Arbo, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: López, Sebastián David. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Burgdörfer, Joachim. Vienna University of Technology; Austria
Materia
SEMICLASSICAL
DELAYS
PHOTOIONIZATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/217783
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/217783
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionizationArbo, DiegoLópez, Sebastián DavidBurgdörfer, JoachimSEMICLASSICALDELAYSPHOTOIONIZATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Phase and time delays of atomic above-threshold ionization were recently experimentally explored in an ω-2ω setting [Zipp, Optica 1, 361 (2014)2334-253610.1364/OPTICA.1.000361]. The phases of wave packets ejected from argon by a strong 2ω pulse were probed as a function of the relative phase of a weaker ω probe pulse. Numerical simulations solving the time-dependent Schrödinger equation (TDSE) displayed a sensitive dependence of the doubly differential momentum distribution on the relative phase between the ω and 2ω fields. Moreover, a surprisingly strong variation of the extracted phase delays on the intensity of the probe pulse was found. We present a semiclassical strong-field description of the phase delays in the emission of electrons in an ω-2ω setting and apply it to atomic hydrogen. Nonperturbative effects in both the 2ω pump and the ω probe field are included. The semiclassical description allows tracing phase delays to path interferences between emission during different points in time of emission within the temporal unit cell of the two-color laser field. We find good agreement between the semiclassical saddle-point approximation, the full strong-field approximation (SFA), and previous results applicable in the perturbative limit of probe fields. We show that the RABBIT-like perturbative description of phase delays breaks down for stronger fields and higher-energy electron emission. In this regime, characterization of the ionization signal requires an entire ensemble of phase delays δi(E) with i=1,2,... the difference in photon numbers of the strong 2ω field involved in the interfering paths. Comparison between SFA and TDSE calculations reveals the influence of the Coulomb field even in this strong-field scenario.Fil: Arbo, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: López, Sebastián David. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Burgdörfer, Joachim. Vienna University of Technology; AustriaAmerican Physical Society2022-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/217783Arbo, Diego; López, Sebastián David; Burgdörfer, Joachim; Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization; American Physical Society; Physical Review A; 106; 5; 11-2022; 1-142469-99262469-9934CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pra/abstract/10.1103/PhysRevA.106.053101info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.106.053101info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:13:04Zoai:ri.conicet.gov.ar:11336/217783instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:13:04.776CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization
title Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization
spellingShingle Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization
Arbo, Diego
SEMICLASSICAL
DELAYS
PHOTOIONIZATION
title_short Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization
title_full Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization
title_fullStr Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization
title_full_unstemmed Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization
title_sort Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization
dc.creator.none.fl_str_mv Arbo, Diego
López, Sebastián David
Burgdörfer, Joachim
author Arbo, Diego
author_facet Arbo, Diego
López, Sebastián David
Burgdörfer, Joachim
author_role author
author2 López, Sebastián David
Burgdörfer, Joachim
author2_role author
author
dc.subject.none.fl_str_mv SEMICLASSICAL
DELAYS
PHOTOIONIZATION
topic SEMICLASSICAL
DELAYS
PHOTOIONIZATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Phase and time delays of atomic above-threshold ionization were recently experimentally explored in an ω-2ω setting [Zipp, Optica 1, 361 (2014)2334-253610.1364/OPTICA.1.000361]. The phases of wave packets ejected from argon by a strong 2ω pulse were probed as a function of the relative phase of a weaker ω probe pulse. Numerical simulations solving the time-dependent Schrödinger equation (TDSE) displayed a sensitive dependence of the doubly differential momentum distribution on the relative phase between the ω and 2ω fields. Moreover, a surprisingly strong variation of the extracted phase delays on the intensity of the probe pulse was found. We present a semiclassical strong-field description of the phase delays in the emission of electrons in an ω-2ω setting and apply it to atomic hydrogen. Nonperturbative effects in both the 2ω pump and the ω probe field are included. The semiclassical description allows tracing phase delays to path interferences between emission during different points in time of emission within the temporal unit cell of the two-color laser field. We find good agreement between the semiclassical saddle-point approximation, the full strong-field approximation (SFA), and previous results applicable in the perturbative limit of probe fields. We show that the RABBIT-like perturbative description of phase delays breaks down for stronger fields and higher-energy electron emission. In this regime, characterization of the ionization signal requires an entire ensemble of phase delays δi(E) with i=1,2,... the difference in photon numbers of the strong 2ω field involved in the interfering paths. Comparison between SFA and TDSE calculations reveals the influence of the Coulomb field even in this strong-field scenario.
Fil: Arbo, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: López, Sebastián David. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Burgdörfer, Joachim. Vienna University of Technology; Austria
description Phase and time delays of atomic above-threshold ionization were recently experimentally explored in an ω-2ω setting [Zipp, Optica 1, 361 (2014)2334-253610.1364/OPTICA.1.000361]. The phases of wave packets ejected from argon by a strong 2ω pulse were probed as a function of the relative phase of a weaker ω probe pulse. Numerical simulations solving the time-dependent Schrödinger equation (TDSE) displayed a sensitive dependence of the doubly differential momentum distribution on the relative phase between the ω and 2ω fields. Moreover, a surprisingly strong variation of the extracted phase delays on the intensity of the probe pulse was found. We present a semiclassical strong-field description of the phase delays in the emission of electrons in an ω-2ω setting and apply it to atomic hydrogen. Nonperturbative effects in both the 2ω pump and the ω probe field are included. The semiclassical description allows tracing phase delays to path interferences between emission during different points in time of emission within the temporal unit cell of the two-color laser field. We find good agreement between the semiclassical saddle-point approximation, the full strong-field approximation (SFA), and previous results applicable in the perturbative limit of probe fields. We show that the RABBIT-like perturbative description of phase delays breaks down for stronger fields and higher-energy electron emission. In this regime, characterization of the ionization signal requires an entire ensemble of phase delays δi(E) with i=1,2,... the difference in photon numbers of the strong 2ω field involved in the interfering paths. Comparison between SFA and TDSE calculations reveals the influence of the Coulomb field even in this strong-field scenario.
publishDate 2022
dc.date.none.fl_str_mv 2022-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/217783
Arbo, Diego; López, Sebastián David; Burgdörfer, Joachim; Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization; American Physical Society; Physical Review A; 106; 5; 11-2022; 1-14
2469-9926
2469-9934
CONICET Digital
CONICET
url http://hdl.handle.net/11336/217783
identifier_str_mv Arbo, Diego; López, Sebastián David; Burgdörfer, Joachim; Semiclassical strong-field theory of phase delays in ω-2ω above-threshold ionization; American Physical Society; Physical Review A; 106; 5; 11-2022; 1-14
2469-9926
2469-9934
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pra/abstract/10.1103/PhysRevA.106.053101
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.106.053101
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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