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High-efficiency surface plasmon meta-couplers: concept and microwave-regime realizations
Surface plasmon polaritons (SPPs) and their low-frequency counterparts (i.e., spoof SPPs on artificial surfaces) have recently found numerous applications in photonics, but traditional devices to excite them (such as gratings and prism couplers) all suffer from problems of inherent low efficiency be...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6059849/ https://www.ncbi.nlm.nih.gov/pubmed/30167110 http://dx.doi.org/10.1038/lsa.2016.3 |
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author | Sun, Wujiong He, Qiong Sun, Shulin Zhou, Lei |
author_facet | Sun, Wujiong He, Qiong Sun, Shulin Zhou, Lei |
author_sort | Sun, Wujiong |
collection | PubMed |
description | Surface plasmon polaritons (SPPs) and their low-frequency counterparts (i.e., spoof SPPs on artificial surfaces) have recently found numerous applications in photonics, but traditional devices to excite them (such as gratings and prism couplers) all suffer from problems of inherent low efficiency because the generated SPPs can decouple, returning to free space, and reflections at the device surface can never be avoided. Here, we propose a new SPP excitation scheme based on a transparent gradient metasurface and numerically demonstrate that it exhibits inherently high efficiency (~94%) because the designed meta-coupler suppresses both decoupling and surface reflections. As a practical realization of this concept, we fabricated a meta-coupler for operation in the microwave regime and performed near-field and far-field experiments to demonstrate that the achieved excitation efficiency for spoof SPPs reaches ~73%, which is several times higher than that achieved by other available devices in this frequency domain. Our findings can motivate the design and fabrication of high-performance plasmonic devices to harvest light–matter interactions, particularly those related to spoof SPPs in the low-frequency domain. |
format | Online Article Text |
id | pubmed-6059849 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-60598492018-08-30 High-efficiency surface plasmon meta-couplers: concept and microwave-regime realizations Sun, Wujiong He, Qiong Sun, Shulin Zhou, Lei Light Sci Appl Original Article Surface plasmon polaritons (SPPs) and their low-frequency counterparts (i.e., spoof SPPs on artificial surfaces) have recently found numerous applications in photonics, but traditional devices to excite them (such as gratings and prism couplers) all suffer from problems of inherent low efficiency because the generated SPPs can decouple, returning to free space, and reflections at the device surface can never be avoided. Here, we propose a new SPP excitation scheme based on a transparent gradient metasurface and numerically demonstrate that it exhibits inherently high efficiency (~94%) because the designed meta-coupler suppresses both decoupling and surface reflections. As a practical realization of this concept, we fabricated a meta-coupler for operation in the microwave regime and performed near-field and far-field experiments to demonstrate that the achieved excitation efficiency for spoof SPPs reaches ~73%, which is several times higher than that achieved by other available devices in this frequency domain. Our findings can motivate the design and fabrication of high-performance plasmonic devices to harvest light–matter interactions, particularly those related to spoof SPPs in the low-frequency domain. Nature Publishing Group 2016-01-01 /pmc/articles/PMC6059849/ /pubmed/30167110 http://dx.doi.org/10.1038/lsa.2016.3 Text en Copyright © 2016 Changchun Institute of Optics, Fine Mechanics and Physics http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 Unported License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ |
spellingShingle | Original Article Sun, Wujiong He, Qiong Sun, Shulin Zhou, Lei High-efficiency surface plasmon meta-couplers: concept and microwave-regime realizations |
title | High-efficiency surface plasmon meta-couplers: concept and microwave-regime realizations |
title_full | High-efficiency surface plasmon meta-couplers: concept and microwave-regime realizations |
title_fullStr | High-efficiency surface plasmon meta-couplers: concept and microwave-regime realizations |
title_full_unstemmed | High-efficiency surface plasmon meta-couplers: concept and microwave-regime realizations |
title_short | High-efficiency surface plasmon meta-couplers: concept and microwave-regime realizations |
title_sort | high-efficiency surface plasmon meta-couplers: concept and microwave-regime realizations |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6059849/ https://www.ncbi.nlm.nih.gov/pubmed/30167110 http://dx.doi.org/10.1038/lsa.2016.3 |
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