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dc.contributor.authorZou, C.en
dc.contributor.authorGutruf, P.en
dc.contributor.authorWithayachumnankul, W.en
dc.contributor.authorZou, L.en
dc.contributor.authorBhaskaran, M.en
dc.contributor.authorSriram, S.en
dc.contributor.authorFumeaux, C.en
dc.identifier.citationOptics Letters, 2016; 41(15):3391-3394en
dc.description.abstractWe demonstrate a narrow-band plasmonic absorber based on a uniform array of nanoscale cylindrical dielectric resonators (DRs) on a metallic substrate at visible frequencies. Under a normally incident plane-wave excitation, the DRs resonate in their horizontal magnetic dipolar mode, which can be seen as localized plasmonic hot spots. Such a localized resonance also couples incident waves into surface plasmon polaritons (SPPs) bidirectionally, and perfect absorption is achieved by creating SPP standing waves. The simulation shows perfect absorption at 633 nm and 1.8% relative bandwidth with >90%absorption, while the measurement demonstrates maximum absorption of 90% at 636 nm. Both simulation and measurement results are analyzed with coupled mode theory. An additional numerical study elaborates on the dependence of absorption on the resonator size, period, and incidence angle.en
dc.description.statementofresponsibilityChengjun Zou, Philipp Gutruf, Withawat Withayachumnankul, Longfang Zou, Madhu Bhaskaran, Sharath Sriram and Christophe Fumeauxen
dc.publisherOptical Society of Americaen
dc.rights© 2016 Optical Society of Americaen
dc.subject(240.0240) Optics at surfaces; (240.6690) Surface waves; (240.6680) Surface plasmons; (310.6628) Subwavelength structures, nanostructures.en
dc.titleNanoscale TiO₂ dielectric resonator absorbersen
dc.title.alternativeNanoscale TiO(2) dielectric resonator absorbersen
dc.typeJournal articleen
pubs.library.collectionElectrical and Electronic Engineering publicationsen
dc.identifier.orcidWithayachumnankul, W. [0000-0003-1155-567X]en
dc.identifier.orcidFumeaux, C. [0000-0001-6831-7213]en
Appears in Collections:Electrical and Electronic Engineering publications

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