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hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
dc.contributor.authorHONGWEI, Jia
hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
dc.contributor.authorFAGGIANI, Rémi
hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
dc.contributor.authorLALANNE, Philippe
dc.date.accessioned2023-05-12T10:54:57Z
dc.date.available2023-05-12T10:54:57Z
dc.date.issued2016
dc.identifier.issn1557-1955
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/181929
dc.description.abstractEnResonant optical dipole nano-antennas allow giant field enhancement within nano-gaps. To show how the energy of external illumination waves is delivered and concentrated in nano-gaps, we build up a model by considering the dynamical launching and multiple scattering processes of surface plasmon polaritions (SPPs) on both antenna arms. The model captures the main feature of the antenna resonance as evidenced by comparison of the model prediction with fully vectorial numerical results and provides an intuitive picture that the energy of external wave is initially transferred into SPP and is then coupled into the nano-gap. The enhanced field in the nano-gap oscillates quasi-periodically with the increase of the antenna-arm length, and the resonance peaks can be predicted with a phase-matching condition derived from the model, showing that antenna resonance is due to a constructive interference of the multiple-scattered SPPs. Analytical equation for determining the complex resonance wavelength and the quality factor of the resonant modes is obtained. The model however exhibits observable deviation from fully vectorial numerical results for the lowest resonance order (for antenna with the shortest arms), evidencing that, for this case, surface waves other than SPPs contribute to the antenna resonance. The present results are helpful for clarifying the underlying physics for the energy concentration with resonant dipole antennas and may provide recipes for intuitive design of antenna devices, such as those used for optical nonlinearity enhancement and biochemical sensing.
dc.language.isoen
dc.publisherSpringer Verlag
dc.title.enComprehensive surface-wave description for the nano-scale energy concentration with resonant dipole antennas
dc.typeArticle de revue
dc.subject.halPhysique [physics]/Physique [physics]/Optique [physics.optics]
bordeaux.journalPlasmonics
bordeaux.page1025-1033
bordeaux.volume11
bordeaux.hal.laboratoriesLaboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-01381409
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01381409v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plasmonics&rft.date=2016&rft.volume=11&rft.spage=1025-1033&rft.epage=1025-1033&rft.eissn=1557-1955&rft.issn=1557-1955&rft.au=HONGWEI,%20Jia&FAGGIANI,%20R%C3%A9mi&LALANNE,%20Philippe&rft.genre=article


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