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

Christopher E. Petoukhoff; Deirdre M. O'Carroll

doi:https://doi.org/10.1038/ncomms8899

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

Christopher E. Petoukhoff, Deirdre M. O'Carroll

School of Engineering, Materials Science & Engineering

Rutgers, The State University

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

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.

Original language	English (US)
Article number	7899
Journal	Nature communications
Volume	6
DOIs	https://doi.org/10.1038/ncomms8899
State	Published - Aug 14 2015

ASJC Scopus subject areas

Chemistry(all)
Biochemistry, Genetics and Molecular Biology(all)
Physics and Astronomy(all)

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title = "Absorption-induced scattering and surface plasmon out-coupling from absorber-coated plasmonic metasurfaces",

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.",

author = "Petoukhoff, {Christopher E.} and O'Carroll, {Deirdre M.}",

note = "Funding Information: Figure 8 | Scattering modes supported by absorber-coated plasmonic metasurfaces. (a) The organic semiconductor-coated planar Ag film has been shown to only support Mie-AIS for organic coatings exhibiting high degrees of nanoscale surface features. (b,c) The organic semiconductor-coated AgNPA/Ag metasurfaces have been shown to support various LSPR, plasmon–AIS and SPP modes. While the LSPR and plasmon–AIS modes backscatter for all absorber coatings, the SPP mode was trapped for semicrystalline organic absorber coatings (b) and was only scattered to the far field for the amorphous organic absorber-coated metasurfaces (c). Publisher Copyright: {\textcopyright} 2015 Macmillan Publishers Limited. All rights reserved.",

year = "2015",

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doi = "https://doi.org/10.1038/ncomms8899",

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journal = "Nature communications",

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AU - O'Carroll, Deirdre M.

N1 - Funding Information: Figure 8 | Scattering modes supported by absorber-coated plasmonic metasurfaces. (a) The organic semiconductor-coated planar Ag film has been shown to only support Mie-AIS for organic coatings exhibiting high degrees of nanoscale surface features. (b,c) The organic semiconductor-coated AgNPA/Ag metasurfaces have been shown to support various LSPR, plasmon–AIS and SPP modes. While the LSPR and plasmon–AIS modes backscatter for all absorber coatings, the SPP mode was trapped for semicrystalline organic absorber coatings (b) and was only scattered to the far field for the amorphous organic absorber-coated metasurfaces (c). Publisher Copyright: © 2015 Macmillan Publishers Limited. All rights reserved.

PY - 2015/8/14

Y1 - 2015/8/14

N2 - 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.

AB - 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.

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

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