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Characteristics of Metal Enhanced Evanescent-Wave Microcavities
This article presents the concept of storing optical energy using a metallic air gap microcavity. Evanescent waves are stored in the air gap of a dielectric/metal/air gap/metal planar microcavity. For an air gap with a micron scale distance between the two metals, incident light excites the optical...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Molecular Diversity Preservation International (MDPI)
2010
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3231203/ https://www.ncbi.nlm.nih.gov/pubmed/22163684 http://dx.doi.org/10.3390/s100908751 |
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author | Wakamatsu, Takashi |
author_facet | Wakamatsu, Takashi |
author_sort | Wakamatsu, Takashi |
collection | PubMed |
description | This article presents the concept of storing optical energy using a metallic air gap microcavity. Evanescent waves are stored in the air gap of a dielectric/metal/air gap/metal planar microcavity. For an air gap with a micron scale distance between the two metals, incident light excites the optical interface modes on the two metal-air interfaces simultaneously, being accompanied by enhanced evanescent fields. Numerical simulations show that the reflected light depends remarkably upon distributions of the enhanced electric fields in the air-gap at the optical mode excitations. The metallic microcavities have a Q value on the order of 10(2), as determined from calculations. Experimentally, a small mechanical variation of the air-gap distance exhibited a change of reflectivity. |
format | Online Article Text |
id | pubmed-3231203 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | Molecular Diversity Preservation International (MDPI) |
record_format | MEDLINE/PubMed |
spelling | pubmed-32312032011-12-07 Characteristics of Metal Enhanced Evanescent-Wave Microcavities Wakamatsu, Takashi Sensors (Basel) Article This article presents the concept of storing optical energy using a metallic air gap microcavity. Evanescent waves are stored in the air gap of a dielectric/metal/air gap/metal planar microcavity. For an air gap with a micron scale distance between the two metals, incident light excites the optical interface modes on the two metal-air interfaces simultaneously, being accompanied by enhanced evanescent fields. Numerical simulations show that the reflected light depends remarkably upon distributions of the enhanced electric fields in the air-gap at the optical mode excitations. The metallic microcavities have a Q value on the order of 10(2), as determined from calculations. Experimentally, a small mechanical variation of the air-gap distance exhibited a change of reflectivity. Molecular Diversity Preservation International (MDPI) 2010-09-21 /pmc/articles/PMC3231203/ /pubmed/22163684 http://dx.doi.org/10.3390/s100908751 Text en © 2010 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Wakamatsu, Takashi Characteristics of Metal Enhanced Evanescent-Wave Microcavities |
title | Characteristics of Metal Enhanced Evanescent-Wave Microcavities |
title_full | Characteristics of Metal Enhanced Evanescent-Wave Microcavities |
title_fullStr | Characteristics of Metal Enhanced Evanescent-Wave Microcavities |
title_full_unstemmed | Characteristics of Metal Enhanced Evanescent-Wave Microcavities |
title_short | Characteristics of Metal Enhanced Evanescent-Wave Microcavities |
title_sort | characteristics of metal enhanced evanescent-wave microcavities |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3231203/ https://www.ncbi.nlm.nih.gov/pubmed/22163684 http://dx.doi.org/10.3390/s100908751 |
work_keys_str_mv | AT wakamatsutakashi characteristicsofmetalenhancedevanescentwavemicrocavities |