Absorption-induced scattering and surface plasmon out-coupling from absorber-coated plasmonic metasurfaces

Christopher E. Petoukhoff and Deirdre M. O’Carroll ()
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Christopher E. Petoukhoff: Rutgers University
Deirdre M. O’Carroll: Rutgers University

Nature Communications, 2015, vol. 6, issue 1, 1-13

Abstract: Abstract Interactions between absorbers and plasmonic metasurfaces can give rise to unique optical properties not present for either of the individual materials and can influence the performance of a host of optical sensing and thin-film optoelectronic applications. Here we identify three distinct mode types of absorber-coated plasmonic metasurfaces: localized and propagating surface plasmons and a previously unidentified optical mode type called absorption-induced scattering. The extinction of the latter mode type can be tuned by controlling the morphology of the absorber coating and the spectral overlap of the absorber with the plasmonic modes. Furthermore, we show that surface plasmons are backscattered when the crystallinity of the absorber is low but are absorbed for more crystalline absorber coatings. This work furthers our understanding of light–matter interactions between absorbers and surface plasmons to enable practical optoelectronic applications of metasurfaces.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8899

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DOI: 10.1038/ncomms8899

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