Dispersion and transitions of dipolar plasmon modes in graded plasmonic waveguides

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dc.creatorXiao, J. J.
dc.creatorYakubo, K.
dc.creatorYu, K. W.
dc.date2006-10-17
dc.date.accessioned2026-07-07T07:27:33Z
dc.date.available2026-07-07T07:27:33Z
dc.descriptionCoupled plasmon modes are studied in graded plasmonic waveguides, which are periodic chains of metallic nanoparticles embedded in a host with gradually varying refractive indices. We identify three types of localized modes called "light", "heavy", and "light-heavy" plasmonic gradons outside the passband, according to various degrees of localization. We also demonstrate new transitions among extended and localized modes when the interparticle separation $d$ is smaller than a critical $d_c$, whereas the three types of localized modes occur for $d>d_c$, with no extended modes. The transitions can be explained with phase diagrams constructed for the lossless metallic systems.
dc.descriptionPreliminary results have been presented at ETOPIM 7. Submitted to Appl. Phys. Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/0610453
dc.identifierhttp://arxiv.org/abs/cond-mat/0610453
dc.identifierAppl. Phys. Lett. 89, 221503 (2006)
dc.identifierdoi:10.1063/1.2396905
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/117412
dc.subjectMaterials Science
dc.subjectComputational Physics
dc.subjectOptics
dc.titleDispersion and transitions of dipolar plasmon modes in graded plasmonic waveguides
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