Real-space visualization of canalized ray polaritons in a single van der Waals thin slab

Polaritons are central to the development of nanophotonics, as they provide mechanisms for manipulating light at the nanoscale. A key advancement has been the demonstration of polariton canalization in which the energy flow is directed along a single direction. An intriguing case is the canalization...

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Autores: Terán-García, Enrique, Lanza, Christian, Voronin, Kirill V., Martín-Sánchez, Javier, Nikitin, Alexey Y., Tarazaga Martín-Luengo, Aitana, Alonso-González, Pablo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/391440
Acceso en línea:http://hdl.handle.net/10261/391440
Access Level:acceso abierto
Palabra clave:Canalization
α-MoO3
Phonon polaritons
s-SNOM
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spelling Real-space visualization of canalized ray polaritons in a single van der Waals thin slabTerán-García, EnriqueLanza, ChristianVoronin, Kirill V.Martín-Sánchez, JavierNikitin, Alexey Y.Tarazaga Martín-Luengo, AitanaAlonso-González, PabloCanalizationα-MoO3Phonon polaritonss-SNOMPolaritons are central to the development of nanophotonics, as they provide mechanisms for manipulating light at the nanoscale. A key advancement has been the demonstration of polariton canalization in which the energy flow is directed along a single direction. An intriguing case is the canalization of ray polaritons, characterized by an enhanced density of optical states. Experimental demonstrations of ray polaritons are scarce and their observation in single crystal slabs remains elusive. Here, we propose a novel polaritonic platform based on single thin slabs allowing for the excitation of canalized ray polaritons. By performing near-field nanoimaging, we demonstrate that the necessary conditions for their observation are fulfilled for phonon-polaritons at mid-IR frequencies in thin α-MoO3 slabs on SiO2 substrates. Our real-space images reveal the propagation of unidirectional phonon-polaritons exhibiting a constant propagating phase. These results might impact the development of compact, low-loss optical nanodevices for applications requiring strong light directionality.E.T.-G. acknowledges support through the Severo Ochoa program from the Government of the Principality of Asturias (no. PA-23-PF-BP22-046). J.M.-S. acknowledges financial support from the Spanish Ministry of Science, Innovation and Universities, AEI and FEDER (grant number PID2023-148457NB-I00 funded by MCIU /AEI /10.13039/501100011033 / FEDER, UE), and project PCI2022-132953 funded by MCIN/AEI/10.13039/501100011033 and the EU “NextGenerationEU”/PRTR”. A.Y.N. acknowledges Spanish Ministry of Science and Innovation (grant PID2023-147676NB-I00) and the Basque Department of Education (grant PIBA-2023-1-0007). P.A.-G. acknowledges support from the European Research Council under Consolidator grant no. 101044461, TWISTOPTICS and the Spanish Ministry of Science and Innovation (State Plan for Scientific and Technical Research and Innovation grant number PID2022-141304NB-I00).Peer reviewedAmerican Chemical SocietyPrincipado de AsturiasMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)European CommissionEusko JaurlaritzaEuropean Research CouncilConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/391440reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-148457NB-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PCI2022-132953info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-147676NB-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-141304NB-I00info:eu-repo/grantAgreement/EC/HE/101044461Terán-García, Enrique; Lanza, Christian; Voronin, Kirill; Martín-Sánchez, Javier; Nikitin, Alexey Y.; Tarazaga Martín-Luengo, Aitana; Alonso-González, Pablo; 2025; Supporting information for Real-space visualization of canalized ray polaritons in a single van der Waals thin slab [Dataset]; American Chemical Society; https://doi.org/10.1021/acs.nanolett.4c05277https://doi.org/10.1021/acs.nanolett.4c05277Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3914402026-05-22T06:33:51Z
dc.title.none.fl_str_mv Real-space visualization of canalized ray polaritons in a single van der Waals thin slab
title Real-space visualization of canalized ray polaritons in a single van der Waals thin slab
spellingShingle Real-space visualization of canalized ray polaritons in a single van der Waals thin slab
Terán-García, Enrique
Canalization
α-MoO3
Phonon polaritons
s-SNOM
title_short Real-space visualization of canalized ray polaritons in a single van der Waals thin slab
title_full Real-space visualization of canalized ray polaritons in a single van der Waals thin slab
title_fullStr Real-space visualization of canalized ray polaritons in a single van der Waals thin slab
title_full_unstemmed Real-space visualization of canalized ray polaritons in a single van der Waals thin slab
title_sort Real-space visualization of canalized ray polaritons in a single van der Waals thin slab
dc.creator.none.fl_str_mv Terán-García, Enrique
Lanza, Christian
Voronin, Kirill V.
Martín-Sánchez, Javier
Nikitin, Alexey Y.
Tarazaga Martín-Luengo, Aitana
Alonso-González, Pablo
author Terán-García, Enrique
author_facet Terán-García, Enrique
Lanza, Christian
Voronin, Kirill V.
Martín-Sánchez, Javier
Nikitin, Alexey Y.
Tarazaga Martín-Luengo, Aitana
Alonso-González, Pablo
author_role author
author2 Lanza, Christian
Voronin, Kirill V.
Martín-Sánchez, Javier
Nikitin, Alexey Y.
Tarazaga Martín-Luengo, Aitana
Alonso-González, Pablo
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Principado de Asturias
Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
European Commission
Eusko Jaurlaritza
European Research Council
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Canalization
α-MoO3
Phonon polaritons
s-SNOM
topic Canalization
α-MoO3
Phonon polaritons
s-SNOM
description Polaritons are central to the development of nanophotonics, as they provide mechanisms for manipulating light at the nanoscale. A key advancement has been the demonstration of polariton canalization in which the energy flow is directed along a single direction. An intriguing case is the canalization of ray polaritons, characterized by an enhanced density of optical states. Experimental demonstrations of ray polaritons are scarce and their observation in single crystal slabs remains elusive. Here, we propose a novel polaritonic platform based on single thin slabs allowing for the excitation of canalized ray polaritons. By performing near-field nanoimaging, we demonstrate that the necessary conditions for their observation are fulfilled for phonon-polaritons at mid-IR frequencies in thin α-MoO3 slabs on SiO2 substrates. Our real-space images reveal the propagation of unidirectional phonon-polaritons exhibiting a constant propagating phase. These results might impact the development of compact, low-loss optical nanodevices for applications requiring strong light directionality.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/391440
url http://hdl.handle.net/10261/391440
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
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#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-148457NB-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PCI2022-132953
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-147676NB-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-141304NB-I00
info:eu-repo/grantAgreement/EC/HE/101044461
Terán-García, Enrique; Lanza, Christian; Voronin, Kirill; Martín-Sánchez, Javier; Nikitin, Alexey Y.; Tarazaga Martín-Luengo, Aitana; Alonso-González, Pablo; 2025; Supporting information for Real-space visualization of canalized ray polaritons in a single van der Waals thin slab [Dataset]; American Chemical Society; https://doi.org/10.1021/acs.nanolett.4c05277
https://doi.org/10.1021/acs.nanolett.4c05277
Sí
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 American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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repository.mail.fl_str_mv
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