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Nanoscale interference patterns of gap-mode multipolar plasmonic fields
Arbitrary spatial distributions of the electric field of light are formed through the interference of individual wavenumber mode fields with appropriate amplitudes and phases, while the maximum wavenumber in the far field is limited by the wavelength of light. In contrast, localized surface plasmons...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3479447/ https://www.ncbi.nlm.nih.gov/pubmed/23097686 http://dx.doi.org/10.1038/srep00764 |
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author | Tanaka, Yoshito Sanada, Akio Sasaki, Keiji |
author_facet | Tanaka, Yoshito Sanada, Akio Sasaki, Keiji |
author_sort | Tanaka, Yoshito |
collection | PubMed |
description | Arbitrary spatial distributions of the electric field of light are formed through the interference of individual wavenumber mode fields with appropriate amplitudes and phases, while the maximum wavenumber in the far field is limited by the wavelength of light. In contrast, localized surface plasmons (LSPs) possess the ability to confine photons strongly into nanometer-scale areas, exceeding the diffraction limit. In particular, gap-mode LSPs produce single-nanometer-sized, highly intense localized fields, known as hot spots. Here, we show the nanoscale spatial profiles of the LSP fields within hot spots, which exhibit complicated fine structures, rather than single peaks. The nanopatterns are created by constructive and destructive interferences of dipolar, quadrupolar, and higher-order multipolar plasmonic modes, which can be drastically altered by controlling parameters of the excitation optical system. The analysis in this study would be useful for proposing new concepts for manipulation and control of light-matter interactions in nanospaces. |
format | Online Article Text |
id | pubmed-3479447 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-34794472012-10-24 Nanoscale interference patterns of gap-mode multipolar plasmonic fields Tanaka, Yoshito Sanada, Akio Sasaki, Keiji Sci Rep Article Arbitrary spatial distributions of the electric field of light are formed through the interference of individual wavenumber mode fields with appropriate amplitudes and phases, while the maximum wavenumber in the far field is limited by the wavelength of light. In contrast, localized surface plasmons (LSPs) possess the ability to confine photons strongly into nanometer-scale areas, exceeding the diffraction limit. In particular, gap-mode LSPs produce single-nanometer-sized, highly intense localized fields, known as hot spots. Here, we show the nanoscale spatial profiles of the LSP fields within hot spots, which exhibit complicated fine structures, rather than single peaks. The nanopatterns are created by constructive and destructive interferences of dipolar, quadrupolar, and higher-order multipolar plasmonic modes, which can be drastically altered by controlling parameters of the excitation optical system. The analysis in this study would be useful for proposing new concepts for manipulation and control of light-matter interactions in nanospaces. Nature Publishing Group 2012-10-24 /pmc/articles/PMC3479447/ /pubmed/23097686 http://dx.doi.org/10.1038/srep00764 Text en Copyright © 2012, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ |
spellingShingle | Article Tanaka, Yoshito Sanada, Akio Sasaki, Keiji Nanoscale interference patterns of gap-mode multipolar plasmonic fields |
title | Nanoscale interference patterns of gap-mode multipolar plasmonic fields |
title_full | Nanoscale interference patterns of gap-mode multipolar plasmonic fields |
title_fullStr | Nanoscale interference patterns of gap-mode multipolar plasmonic fields |
title_full_unstemmed | Nanoscale interference patterns of gap-mode multipolar plasmonic fields |
title_short | Nanoscale interference patterns of gap-mode multipolar plasmonic fields |
title_sort | nanoscale interference patterns of gap-mode multipolar plasmonic fields |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3479447/ https://www.ncbi.nlm.nih.gov/pubmed/23097686 http://dx.doi.org/10.1038/srep00764 |
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