Plasmonic nanocavity modes: from near-field to far-field radiation

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Plasmonic nanocavity modes : from near-field to far-field radiation. / Kongsuwan, Nuttawut; Demetriadou, Angela; Horton, Matthew ; Chikkaraddy, Rohit; Baumberg, Jeremy J.; Hess, Ortwin.

In: ACS Photonics, 09.01.2020.

Research output: Contribution to journalArticle

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Kongsuwan, Nuttawut ; Demetriadou, Angela ; Horton, Matthew ; Chikkaraddy, Rohit ; Baumberg, Jeremy J. ; Hess, Ortwin. / Plasmonic nanocavity modes : from near-field to far-field radiation. In: ACS Photonics. 2020.

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@article{27712fe3b818477aae0502e9f00611f5,
title = "Plasmonic nanocavity modes: from near-field to far-field radiation",
abstract = "In the past decade, advances in nanotechnology have led to the development of plasmonic nanocavities which facilitate light-matter strong coupling in ambient conditions. The most robust example is the nanoparticle-on-mirror (NPoM) structure whose geometry is controlled with subnanometer precision. The excited plasmons in such nanocavities are extremely sensitive to the exact morphology of the nanocavity, giving rise to unexpected optical behaviors. So far, most theoretical and experimental studies on such nanocavities have been based solely on their scattering and absorption properties. However, these methods do not provide a complete optical description of the nanocavities. Here, the NPoM is treated as an open non-conservative system supporting a set of photonic quasinormal modes (QNMs). By investigating the morphology-dependent optical properties of nanocavities, we propose a simple yet comprehensive nomenclature based on spherical harmonics and report spectrally overlapping bright and dark nanogap eigenmodes. The near-field and far-field optical properties of NPoMs are explored and reveal intricate multi-modal interactions.",
author = "Nuttawut Kongsuwan and Angela Demetriadou and Matthew Horton and Rohit Chikkaraddy and Baumberg, {Jeremy J.} and Ortwin Hess",
year = "2020",
month = jan
day = "9",
doi = "10.1021/acsphotonics.9b01445",
language = "English",
journal = "ACS Photonics",
issn = "2330-4022",
publisher = "American Chemical Society",

}

RIS

TY - JOUR

T1 - Plasmonic nanocavity modes

T2 - from near-field to far-field radiation

AU - Kongsuwan, Nuttawut

AU - Demetriadou, Angela

AU - Horton, Matthew

AU - Chikkaraddy, Rohit

AU - Baumberg, Jeremy J.

AU - Hess, Ortwin

PY - 2020/1/9

Y1 - 2020/1/9

N2 - In the past decade, advances in nanotechnology have led to the development of plasmonic nanocavities which facilitate light-matter strong coupling in ambient conditions. The most robust example is the nanoparticle-on-mirror (NPoM) structure whose geometry is controlled with subnanometer precision. The excited plasmons in such nanocavities are extremely sensitive to the exact morphology of the nanocavity, giving rise to unexpected optical behaviors. So far, most theoretical and experimental studies on such nanocavities have been based solely on their scattering and absorption properties. However, these methods do not provide a complete optical description of the nanocavities. Here, the NPoM is treated as an open non-conservative system supporting a set of photonic quasinormal modes (QNMs). By investigating the morphology-dependent optical properties of nanocavities, we propose a simple yet comprehensive nomenclature based on spherical harmonics and report spectrally overlapping bright and dark nanogap eigenmodes. The near-field and far-field optical properties of NPoMs are explored and reveal intricate multi-modal interactions.

AB - In the past decade, advances in nanotechnology have led to the development of plasmonic nanocavities which facilitate light-matter strong coupling in ambient conditions. The most robust example is the nanoparticle-on-mirror (NPoM) structure whose geometry is controlled with subnanometer precision. The excited plasmons in such nanocavities are extremely sensitive to the exact morphology of the nanocavity, giving rise to unexpected optical behaviors. So far, most theoretical and experimental studies on such nanocavities have been based solely on their scattering and absorption properties. However, these methods do not provide a complete optical description of the nanocavities. Here, the NPoM is treated as an open non-conservative system supporting a set of photonic quasinormal modes (QNMs). By investigating the morphology-dependent optical properties of nanocavities, we propose a simple yet comprehensive nomenclature based on spherical harmonics and report spectrally overlapping bright and dark nanogap eigenmodes. The near-field and far-field optical properties of NPoMs are explored and reveal intricate multi-modal interactions.

U2 - 10.1021/acsphotonics.9b01445

DO - 10.1021/acsphotonics.9b01445

M3 - Article

JO - ACS Photonics

JF - ACS Photonics

SN - 2330-4022

ER -