Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmosphere

This study describes a simple method to generate sub-20 fs UV-pulses (264 nm) by third-harmonic generation, in an air-plasma filament formed after focusing the fundamental 800 nm beam directly in the lab open-atmosphere. The generated pulses are applied to track the relaxation through the conical in...

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Autores: Peralta Conde, Álvaro, Lamas Frejo, Iker, Sánchez Albaneda, Marina, Méndez, Cruz, Longarte Aldama, Asier, Montero Santos, Raúl
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/61636
Acceso en línea:http://hdl.handle.net/10810/61636
Access Level:acceso abierto
Palabra clave:sub-20 fs UV pulses
electronic relaxation
non-adiabatic coupling
conical intersection
wavepacket
electronic coherence
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spelling Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmospherePeralta Conde, ÁlvaroLamas Frejo, IkerSánchez Albaneda, MarinaMéndez, CruzLongarte Aldama, AsierMontero Santos, Raúlsub-20 fs UV pulseselectronic relaxationnon-adiabatic couplingconical intersectionwavepacketelectronic coherenceThis study describes a simple method to generate sub-20 fs UV-pulses (264 nm) by third-harmonic generation, in an air-plasma filament formed after focusing the fundamental 800 nm beam directly in the lab open-atmosphere. The generated pulses are applied to track the relaxation through the conical intersection that couples the S2 and S1 states, in the benchmark molecule of naphthalene. The transients, with a resolution of about 25 fs, show two differentiate patterns of quantum beats. The assignation of these oscillations to specific modes in the lower S1 state and to electronic coherence between the two coupled states is discussed.All the experiments were carried out at the CLPU facility. The authors acknowledge the assistance from the CLPU technical and administrative personnel. They also thank the financial support from the Spanish MINECO through the grant: PGC2018-098561-B-C21. The work was also funded by the Basque Government (IT1162-19 and IT1491-22). I. Lamas thanks the UPV/EHU for his predoctoral fellowship. Technical and human support provided by SGIker (UPV/EHU, MICINN, GV/EJ, ESF) is also gratefully acknowledged. The authors greatly appreciate the Open Access funding provided by University of Basque Country.Elsevier202320232023info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/61636reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICIU/PGC2018-098561-B-C21/https://www.sciencedirect.com/science/article/pii/S0009261422009253info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/es/© 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by- nc-nd/4.0/).Atribución-NoComercial-SinDerivadas 3.0 Españaoai:addi.ehu.eus:10810/616362026-06-18T09:23:17Z
dc.title.none.fl_str_mv Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmosphere
title Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmosphere
spellingShingle Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmosphere
Peralta Conde, Álvaro
sub-20 fs UV pulses
electronic relaxation
non-adiabatic coupling
conical intersection
wavepacket
electronic coherence
title_short Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmosphere
title_full Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmosphere
title_fullStr Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmosphere
title_full_unstemmed Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmosphere
title_sort Tracking ultrafast dynamics by sub-20-fs UV pulses generated in the lab open atmosphere
dc.creator.none.fl_str_mv Peralta Conde, Álvaro
Lamas Frejo, Iker
Sánchez Albaneda, Marina
Méndez, Cruz
Longarte Aldama, Asier
Montero Santos, Raúl
author Peralta Conde, Álvaro
author_facet Peralta Conde, Álvaro
Lamas Frejo, Iker
Sánchez Albaneda, Marina
Méndez, Cruz
Longarte Aldama, Asier
Montero Santos, Raúl
author_role author
author2 Lamas Frejo, Iker
Sánchez Albaneda, Marina
Méndez, Cruz
Longarte Aldama, Asier
Montero Santos, Raúl
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv sub-20 fs UV pulses
electronic relaxation
non-adiabatic coupling
conical intersection
wavepacket
electronic coherence
topic sub-20 fs UV pulses
electronic relaxation
non-adiabatic coupling
conical intersection
wavepacket
electronic coherence
description This study describes a simple method to generate sub-20 fs UV-pulses (264 nm) by third-harmonic generation, in an air-plasma filament formed after focusing the fundamental 800 nm beam directly in the lab open-atmosphere. The generated pulses are applied to track the relaxation through the conical intersection that couples the S2 and S1 states, in the benchmark molecule of naphthalene. The transients, with a resolution of about 25 fs, show two differentiate patterns of quantum beats. The assignation of these oscillations to specific modes in the lower S1 state and to electronic coherence between the two coupled states is discussed.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/61636
url http://hdl.handle.net/10810/61636
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICIU/PGC2018-098561-B-C21/
https://www.sciencedirect.com/science/article/pii/S0009261422009253
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Atribución-NoComercial-SinDerivadas 3.0 España
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Atribución-NoComercial-SinDerivadas 3.0 España
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869422831260925952
score 15,300719

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