Importance of substrates for the visibility of "dark" plasmonic modes

dc.bibliographicCitation.firstPage13938eng
dc.bibliographicCitation.issue9eng
dc.bibliographicCitation.journalTitleOptics express : the international electronic journal of opticseng
dc.bibliographicCitation.lastPage13948eng
dc.bibliographicCitation.volume28eng
dc.contributor.authorFiedler, Saskia
dc.contributor.authorRaza, Søren
dc.contributor.authorAi, Ruoqi
dc.contributor.authorWang, Jianfang
dc.contributor.authorBusch, Kurt
dc.contributor.authorStenger, Nicolas
dc.contributor.authorMortensen, N. Asger
dc.contributor.authorWolff, Christian
dc.date.accessioned2021-11-30T12:40:26Z
dc.date.available2021-11-30T12:40:26Z
dc.date.issued2020
dc.description.abstractDark plasmonic modes have interesting properties, including longer lifetimes and narrower linewidths than their radiative counterpart, and little to no radiative losses. However, they have not been extensively studied yet due to their optical inaccessibility. In this work, we systematically investigated the dark radial breathing modes (RBMs) in monocrystalline gold nanodisks, specifically their outcoupling behavior into the far-field by cathodoluminescence spectroscopy. Increasing the substrate thickness resulted in an up to 4-fold enhanced visibility. This is attributed to breaking the mirror symmetry by the high-index substrate, creating an effective dipole moment. Furthermore, the resonance energy of the dark RMBs can be easily tuned by varying the nanodisk diameter, making them promising candidates for nanophotonic applications. © 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreementeng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/7568
dc.identifier.urihttps://doi.org/10.34657/6615
dc.language.isoengeng
dc.publisherWashington, DC : Soc.eng
dc.relation.doihttps://doi.org/10.1364/OE.393056
dc.relation.essn1094-4087
dc.rights.licenseOSA Open Access Publishing Agreementeng
dc.rights.urihttps://www.osapublishing.org/library/license_v1.cfmeng
dc.subject.ddc530eng
dc.subject.otherPlasmonicseng
dc.subject.otherVisibilityeng
dc.subject.otherCathodoluminescence spectroscopyeng
dc.subject.otherEffective dipole momentseng
dc.subject.otherHigh-index substrateseng
dc.subject.otherMirror symmetryeng
dc.subject.otherMonocrystallineeng
dc.subject.otherRadial breathing modeeng
dc.subject.otherResonance energieseng
dc.subject.otherSubstrate thicknesseng
dc.subject.otherSubstrateseng
dc.titleImportance of substrates for the visibility of "dark" plasmonic modeseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorMBIeng
wgl.subjectPhysikeng
wgl.typeZeitschriftenartikeleng
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