Coherent Fano resonances in a plasmonic nanocluster enhance optical four-wave mixing

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dc.citation.journalTitlePNAS Early Editionen_US
dc.contributor.authorZhang, Yuen_US
dc.contributor.authorWen, Fangfangen_US
dc.contributor.authorZhen, Yu-Rongen_US
dc.contributor.authorNordlander, Peteren_US
dc.contributor.authorHalas, Naomi J.en_US
dc.contributor.orgLaboratory for Nanophotonicsen_US
dc.date.accessioned2013-06-19T17:16:53Zen_US
dc.date.available2013-06-19T17:16:53Zen_US
dc.date.issued2013en_US
dc.description.abstractPlasmonic nanoclusters, an ordered assembly of coupled metallic nanoparticles, support unique spectral features known as Fano resonances due to the coupling between their subradiant and superradiant plasmon modes. Within the Fano resonance, absorption is significantly enhanced, giving rise to highly localized, intense near fields with the potential to enhance nonlinear optical processes. Here, we report a structure supporting the coherent oscillation of two distinct Fano resonances within an individual plasmonic nanocluster. We show how this coherence enhances the optical four-wave mixing process in comparison with other doubleresonant plasmonic clusters that lack this property. A model that explains the observed four-wave mixing features is proposed, which is generally applicable to any third-order process in plasmonic nanostructures. With a larger effective susceptibility χ (3) relative to existing nonlinear optical materials, this coherent double-resonant nanocluster offers a strategy for designing high-performance thirdorder nonlinear optical media.en_US
dc.embargo.termsnoneen_US
dc.identifier.citationZhang, Yu, Wen, Fangfang, Zhen, Yu-Rong, et al.. "Coherent Fano resonances in a plasmonic nanocluster enhance optical four-wave mixing." <i>PNAS Early Edition,</i> (2013) National Academy of Sciences: http://dx.doi.org/10.1073/pnas.1220304110.en_US
dc.identifier.doihttp://dx.doi.org/10.1073/pnas.1220304110en_US
dc.identifier.urihttps://hdl.handle.net/1911/71331en_US
dc.language.isoengen_US
dc.publisherNational Academy of Sciencesen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordnanostructured materialsen_US
dc.subject.keywordnonlinear opticsen_US
dc.subject.keywordphase matchingen_US
dc.titleCoherent Fano resonances in a plasmonic nanocluster enhance optical four-wave mixingen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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