Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennas

[EN]Structured light provides unique opportunities to spatially tailor the electromagnetic field of laser beams. These include the possibility of a sub-wavelength spatial separation of their electric and magnetic fields, which would allow isolating interactions of matter with pure magnetic (or elect...

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Autores: Martín Hernández, Rodrigo, Grünewald, Lorenz, Sánchez-Tejerina, Luis, Plaja Rustein, Luis, Conejero Jarque, Enrique, Hernández García, Carlos, Mai, Sebastian
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/159506
Acceso en línea:http://hdl.handle.net/10366/159506
Access Level:acceso abierto
Palabra clave:Azimuthally polarized beams
High harmonic generation
Molecular spectroscopy
Optical fields
Quantum key distribution
Spatial light modulators
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spelling Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennasMartín Hernández, RodrigoGrünewald, LorenzSánchez-Tejerina, LuisPlaja Rustein, LuisConejero Jarque, EnriqueHernández García, CarlosMai, SebastianAzimuthally polarized beamsHigh harmonic generationMolecular spectroscopyOptical fieldsQuantum key distributionSpatial light modulators[EN]Structured light provides unique opportunities to spatially tailor the electromagnetic field of laser beams. These include the possibility of a sub-wavelength spatial separation of their electric and magnetic fields, which would allow isolating interactions of matter with pure magnetic (or electric) fields. This could be particularly interesting in molecular spectroscopy, as excitations due to electric and—usually very weak—magnetic transition dipole moments can be disentangled. In this work, we show that the use of tailored metallic nanoantennas drastically enhances the strength of the longitudinal magnetic field carried by an ultrafast azimuthally polarized beam (by a factor of ∼65), which is spatially separated from the electric field by the beam’s symmetry. Such enhancement is due to favorable phase-matching of the magnetic field induced by the electric current loops created in the antennas. Our particle-in-cell simulation results demonstrate that the interactions of moderately intense (∼1011 W/cm2) and ultrafast azimuthally polarized laser beams with conical, parabolic, Gaussian, or logarithmic metallic nanoantennas provide spatially isolated magnetic field pulses of several tens of TeslaÓptica Publishing Group202420242024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/159506reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)Inglésinfo:eu-repo/grantAgreement/EC/H2020/851201PID2022-142340NB-I00PID2019-106910GB-I00info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1595062026-06-07T06:28:51Z
dc.title.none.fl_str_mv Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennas
title Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennas
spellingShingle Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennas
Martín Hernández, Rodrigo
Azimuthally polarized beams
High harmonic generation
Molecular spectroscopy
Optical fields
Quantum key distribution
Spatial light modulators
title_short Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennas
title_full Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennas
title_fullStr Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennas
title_full_unstemmed Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennas
title_sort Optical magnetic field enhancement using ultrafast azimuthally polarized laser beams and tailored metallic nanoantennas
dc.creator.none.fl_str_mv Martín Hernández, Rodrigo
Grünewald, Lorenz
Sánchez-Tejerina, Luis
Plaja Rustein, Luis
Conejero Jarque, Enrique
Hernández García, Carlos
Mai, Sebastian
author Martín Hernández, Rodrigo
author_facet Martín Hernández, Rodrigo
Grünewald, Lorenz
Sánchez-Tejerina, Luis
Plaja Rustein, Luis
Conejero Jarque, Enrique
Hernández García, Carlos
Mai, Sebastian
author_role author
author2 Grünewald, Lorenz
Sánchez-Tejerina, Luis
Plaja Rustein, Luis
Conejero Jarque, Enrique
Hernández García, Carlos
Mai, Sebastian
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Azimuthally polarized beams
High harmonic generation
Molecular spectroscopy
Optical fields
Quantum key distribution
Spatial light modulators
topic Azimuthally polarized beams
High harmonic generation
Molecular spectroscopy
Optical fields
Quantum key distribution
Spatial light modulators
description [EN]Structured light provides unique opportunities to spatially tailor the electromagnetic field of laser beams. These include the possibility of a sub-wavelength spatial separation of their electric and magnetic fields, which would allow isolating interactions of matter with pure magnetic (or electric) fields. This could be particularly interesting in molecular spectroscopy, as excitations due to electric and—usually very weak—magnetic transition dipole moments can be disentangled. In this work, we show that the use of tailored metallic nanoantennas drastically enhances the strength of the longitudinal magnetic field carried by an ultrafast azimuthally polarized beam (by a factor of ∼65), which is spatially separated from the electric field by the beam’s symmetry. Such enhancement is due to favorable phase-matching of the magnetic field induced by the electric current loops created in the antennas. Our particle-in-cell simulation results demonstrate that the interactions of moderately intense (∼1011 W/cm2) and ultrafast azimuthally polarized laser beams with conical, parabolic, Gaussian, or logarithmic metallic nanoantennas provide spatially isolated magnetic field pulses of several tens of Tesla
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
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/10366/159506
url http://hdl.handle.net/10366/159506
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/EC/H2020/851201
PID2022-142340NB-I00
PID2019-106910GB-I00
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.publisher.none.fl_str_mv Óptica Publishing Group
publisher.none.fl_str_mv Óptica Publishing Group
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
_version_ 1869408173788495872
score 15,811543

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