Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes

[Image: see text] Plasmonic nanoantennas can focus light at nanometer length scales providing intense field enhancements. For the tightest optical confinements (0.5–5 nm) achieved in plasmonic gaps, the gap spacing, refractive index, and facet width play a dominant role in determining the optical pr...

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Autores principales: Chikkaraddy, Rohit, Huang, Junyang, Kos, Dean, Elliott, Eoin, Kamp, Marlous, Guo, Chenyang, Baumberg, Jeremy J., de Nijs, Bart
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9936626/
https://www.ncbi.nlm.nih.gov/pubmed/36820326
http://dx.doi.org/10.1021/acsphotonics.2c01603
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author Chikkaraddy, Rohit
Huang, Junyang
Kos, Dean
Elliott, Eoin
Kamp, Marlous
Guo, Chenyang
Baumberg, Jeremy J.
de Nijs, Bart
author_facet Chikkaraddy, Rohit
Huang, Junyang
Kos, Dean
Elliott, Eoin
Kamp, Marlous
Guo, Chenyang
Baumberg, Jeremy J.
de Nijs, Bart
author_sort Chikkaraddy, Rohit
collection PubMed
description [Image: see text] Plasmonic nanoantennas can focus light at nanometer length scales providing intense field enhancements. For the tightest optical confinements (0.5–5 nm) achieved in plasmonic gaps, the gap spacing, refractive index, and facet width play a dominant role in determining the optical properties making tuning through antenna shape challenging. We show here that controlling the surrounding refractive index instead allows both efficient frequency tuning and enhanced in-/output coupling through retardation matching as this allows dark modes to become optically active, improving widespread functionalities.
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spelling pubmed-99366262023-02-18 Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes Chikkaraddy, Rohit Huang, Junyang Kos, Dean Elliott, Eoin Kamp, Marlous Guo, Chenyang Baumberg, Jeremy J. de Nijs, Bart ACS Photonics [Image: see text] Plasmonic nanoantennas can focus light at nanometer length scales providing intense field enhancements. For the tightest optical confinements (0.5–5 nm) achieved in plasmonic gaps, the gap spacing, refractive index, and facet width play a dominant role in determining the optical properties making tuning through antenna shape challenging. We show here that controlling the surrounding refractive index instead allows both efficient frequency tuning and enhanced in-/output coupling through retardation matching as this allows dark modes to become optically active, improving widespread functionalities. American Chemical Society 2023-01-11 /pmc/articles/PMC9936626/ /pubmed/36820326 http://dx.doi.org/10.1021/acsphotonics.2c01603 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Chikkaraddy, Rohit
Huang, Junyang
Kos, Dean
Elliott, Eoin
Kamp, Marlous
Guo, Chenyang
Baumberg, Jeremy J.
de Nijs, Bart
Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes
title Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes
title_full Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes
title_fullStr Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes
title_full_unstemmed Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes
title_short Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes
title_sort boosting optical nanocavity coupling by retardation matching to dark modes
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9936626/
https://www.ncbi.nlm.nih.gov/pubmed/36820326
http://dx.doi.org/10.1021/acsphotonics.2c01603
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