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Subwavelength metallic waveguides as a tool for extreme confinement of THz surface waves
Research on surface waves supported by metals at THz frequencies is experiencing a tremendous growth due to their potential for imaging, biological sensing and high-speed electronic circuits. Harnessing their properties is, however, challenging because these waves are typically poorly confined and w...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3589728/ https://www.ncbi.nlm.nih.gov/pubmed/23463351 http://dx.doi.org/10.1038/srep01369 |
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author | Gacemi, D. Mangeney, J. Colombelli, R. Degiron, A. |
author_facet | Gacemi, D. Mangeney, J. Colombelli, R. Degiron, A. |
author_sort | Gacemi, D. |
collection | PubMed |
description | Research on surface waves supported by metals at THz frequencies is experiencing a tremendous growth due to their potential for imaging, biological sensing and high-speed electronic circuits. Harnessing their properties is, however, challenging because these waves are typically poorly confined and weakly bound to the metal surface. Many design strategies have been introduced to overcome these limitations and achieve increased modal confinement, including patterned surfaces, coated waveguides and a variety of sub-wavelength geometries. Here we provide evidence, using a combination of numerical simulations and time-resolved experiments, that shrinking the transverse size of a generic metallic structure always leads to solutions with extreme field confinement. The existence of such a general behavior offers a new perspective on energy confinement and should benefit future developments in THz science and technology. |
format | Online Article Text |
id | pubmed-3589728 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-35897282013-03-06 Subwavelength metallic waveguides as a tool for extreme confinement of THz surface waves Gacemi, D. Mangeney, J. Colombelli, R. Degiron, A. Sci Rep Article Research on surface waves supported by metals at THz frequencies is experiencing a tremendous growth due to their potential for imaging, biological sensing and high-speed electronic circuits. Harnessing their properties is, however, challenging because these waves are typically poorly confined and weakly bound to the metal surface. Many design strategies have been introduced to overcome these limitations and achieve increased modal confinement, including patterned surfaces, coated waveguides and a variety of sub-wavelength geometries. Here we provide evidence, using a combination of numerical simulations and time-resolved experiments, that shrinking the transverse size of a generic metallic structure always leads to solutions with extreme field confinement. The existence of such a general behavior offers a new perspective on energy confinement and should benefit future developments in THz science and technology. Nature Publishing Group 2013-03-06 /pmc/articles/PMC3589728/ /pubmed/23463351 http://dx.doi.org/10.1038/srep01369 Text en Copyright © 2013, 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-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ |
spellingShingle | Article Gacemi, D. Mangeney, J. Colombelli, R. Degiron, A. Subwavelength metallic waveguides as a tool for extreme confinement of THz surface waves |
title | Subwavelength metallic waveguides as a tool for extreme confinement of THz surface waves |
title_full | Subwavelength metallic waveguides as a tool for extreme confinement of THz surface waves |
title_fullStr | Subwavelength metallic waveguides as a tool for extreme confinement of THz surface waves |
title_full_unstemmed | Subwavelength metallic waveguides as a tool for extreme confinement of THz surface waves |
title_short | Subwavelength metallic waveguides as a tool for extreme confinement of THz surface waves |
title_sort | subwavelength metallic waveguides as a tool for extreme confinement of thz surface waves |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3589728/ https://www.ncbi.nlm.nih.gov/pubmed/23463351 http://dx.doi.org/10.1038/srep01369 |
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