Sub-diffractional cavity modes of terahertz hyperbolic phonon polaritons in tin oxide

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dc.creatorFlávio Henrique Feres
dc.creatorSusanne C. Kehr
dc.creatorJuan Carlos González Pérez
dc.creatorRaul de Oliveira Freitas
dc.creatorIngrid David Barcelos
dc.creatorRafael Alves Mayer
dc.creatorLukas Wehmeier
dc.creatorFrancisco Carlos Barbosa Maia
dc.creatorEmilson Ribeiro Viana Junior
dc.creatorÂngelo Malachias de Souza
dc.creatorHans A. Bechtel
dc.creatorJohn Michael Klopf
dc.creatorLukas M. Eng
dc.date.accessioned2023-06-05T12:40:08Z
dc.date.accessioned2025-09-09T01:16:25Z
dc.date.available2023-06-05T12:40:08Z
dc.date.issued2021
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1038/s41467-021-22209-w
dc.identifier.issn2041-1723
dc.identifier.urihttps://hdl.handle.net/1843/54487
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofNature communications
dc.rightsAcesso Aberto
dc.subjectPolaritons
dc.subjectNanofitas
dc.subject.otherPolaritons
dc.subject.otherNanobelts
dc.titleSub-diffractional cavity modes of terahertz hyperbolic phonon polaritons in tin oxide
dc.typeArtigo de periódico
local.citation.epage9
local.citation.spage1
local.citation.volume12
local.description.resumoHyperbolic phonon polaritons have recently attracted considerable attention in nanophotonics mostly due to their intrinsic strong electromagnetic field confinement, ultraslow polariton group velocities, and long lifetimes. Here we introduce tin oxide (SnO2) nanobelts as a photonic platform for the transport of surface and volume phonon polaritons in the mid- to far-infrared frequency range. This report brings a comprehensive description of the polaritonic properties of SnO2 as a nanometer-sized dielectric and also as an engineered material in the form of a waveguide. By combining accelerator-based IR-THz sources (synchrotron and free-electron laser) with s-SNOM, we employed nanoscale far-infrared hyper-spectral-imaging to uncover a Fabry–Perot cavity mechanism in SnO2 nanobelts via direct detection of phonon-polariton standing waves. Our experimental findings are accurately supported by notable convergence between theory and numerical simulations. Thus, the SnO2 is confirmed as a natural hyperbolic material with unique photonic properties essential for future applications involving subdiffractional light traffic and detection in the far-infrared range.
local.identifier.orcidhttps://orcid.org/0000-0001-9812-974X
local.identifier.orcidhttps://orcid.org/0000-0001-9155-1657
local.identifier.orcidhttps://orcid.org/0000-0002-3285-5447
local.identifier.orcidhttps://orcid.org/0000-0002-5778-7161
local.identifier.orcidhttps://orcid.org/0000-0001-5367-9748
local.identifier.orcidhttps://orcid.org/0000-0001-8416-953X
local.identifier.orcidhttps://orcid.org/0000-0002-4998-4624
local.identifier.orcidhttps://orcid.org/0000-0002-1883-3508
local.identifier.orcidhttps://orcid.org/0000-0002-8703-4283
local.identifier.orcidhttps://orcid.org/0000-0002-7606-9333
local.identifier.orcidhttps://orcid.org/0000-0002-2484-4158
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.nature.com/articles/s41467-021-22209-w#article-info

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