Resonant x-ray difference frequency generation

Resonantly enhanced x-ray difference-frequency generation (re-XDFG) is a second-order nonlinear effect that involves illuminating a molecule with two-color x-ray pulses with photon energies O1 and O2. The energy difference $\Omega_1-\Omega_2$ is tuned to match an x-ray absorption edge of an atom in...

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Autor: Serrat Jurado, Carles|||0000-0002-9528-1938
Formato: artículo
Fecha de publicación:2023
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/400860
Acesso em linha:https://hdl.handle.net/2117/400860
https://dx.doi.org/10.1088/1361-6455/ad0f39
Access Level:acceso abierto
Palavra-chave:X-Rays
Quantum optics
X-ray nonlinear wave-mixing
XFEL
NEXAFS
Ultrafast dynamics
Raigs X
Òptica quàntica
Àrees temàtiques de la UPC::Física
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repository_id_str
spelling Resonant x-ray difference frequency generationSerrat Jurado, Carles|||0000-0002-9528-1938X-RaysQuantum opticsX-ray nonlinear wave-mixingXFELNEXAFSUltrafast dynamicsQuantum opticsRaigs XÒptica quànticaÀrees temàtiques de la UPC::FísicaResonantly enhanced x-ray difference-frequency generation (re-XDFG) is a second-order nonlinear effect that involves illuminating a molecule with two-color x-ray pulses with photon energies O1 and O2. The energy difference $\Omega_1-\Omega_2$ is tuned to match an x-ray absorption edge of an atom in the molecule. We have numerically studied the re-XDFG effect considering different individual molecules in the gas phase using density functional theory calculations and have verified the non-centrosymmetric character of the target transitions. Two-level molecular systems with permanent dipoles are evaluated for the description of re-XDFG taking into account different two-color input pulse geometries. This innovative nonlinear x-ray methodology offers a means to measure the K-edge NEXAFS spectrum of light elements, such as carbon, nitrogen, or oxygen, in dense media using non-resonant x-rays. It can also be used to investigate chemical material dynamics that are inaccessible by linear spectroscopy. These findings enable the combination of atomic-scale structure with chemical specificity and the selective and local access to x-ray excitations using hard x-ray pulses.Peer Reviewed20232023-12-2820242024-02-02journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/400860https://dx.doi.org/10.1088/1361-6455/ad0f39reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4008602026-05-27T15:37:01Z
dc.title.none.fl_str_mv Resonant x-ray difference frequency generation
title Resonant x-ray difference frequency generation
spellingShingle Resonant x-ray difference frequency generation
Serrat Jurado, Carles|||0000-0002-9528-1938
X-Rays
Quantum optics
X-ray nonlinear wave-mixing
XFEL
NEXAFS
Ultrafast dynamics
Quantum optics
Raigs X
Òptica quàntica
Àrees temàtiques de la UPC::Física
title_short Resonant x-ray difference frequency generation
title_full Resonant x-ray difference frequency generation
title_fullStr Resonant x-ray difference frequency generation
title_full_unstemmed Resonant x-ray difference frequency generation
title_sort Resonant x-ray difference frequency generation
dc.creator.none.fl_str_mv Serrat Jurado, Carles|||0000-0002-9528-1938
author Serrat Jurado, Carles|||0000-0002-9528-1938
author_facet Serrat Jurado, Carles|||0000-0002-9528-1938
author_role author
dc.subject.none.fl_str_mv X-Rays
Quantum optics
X-ray nonlinear wave-mixing
XFEL
NEXAFS
Ultrafast dynamics
Quantum optics
Raigs X
Òptica quàntica
Àrees temàtiques de la UPC::Física
topic X-Rays
Quantum optics
X-ray nonlinear wave-mixing
XFEL
NEXAFS
Ultrafast dynamics
Quantum optics
Raigs X
Òptica quàntica
Àrees temàtiques de la UPC::Física
description Resonantly enhanced x-ray difference-frequency generation (re-XDFG) is a second-order nonlinear effect that involves illuminating a molecule with two-color x-ray pulses with photon energies O1 and O2. The energy difference $\Omega_1-\Omega_2$ is tuned to match an x-ray absorption edge of an atom in the molecule. We have numerically studied the re-XDFG effect considering different individual molecules in the gas phase using density functional theory calculations and have verified the non-centrosymmetric character of the target transitions. Two-level molecular systems with permanent dipoles are evaluated for the description of re-XDFG taking into account different two-color input pulse geometries. This innovative nonlinear x-ray methodology offers a means to measure the K-edge NEXAFS spectrum of light elements, such as carbon, nitrogen, or oxygen, in dense media using non-resonant x-rays. It can also be used to investigate chemical material dynamics that are inaccessible by linear spectroscopy. These findings enable the combination of atomic-scale structure with chemical specificity and the selective and local access to x-ray excitations using hard x-ray pulses.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-12-28
2024
2024-02-02
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/400860
https://dx.doi.org/10.1088/1361-6455/ad0f39
url https://hdl.handle.net/2117/400860
https://dx.doi.org/10.1088/1361-6455/ad0f39
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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