Experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures

A thin dielectric plate can support conventional slab modes such as leaky Fabry-Perot, guided waves and radiation modes. When the plate is coated on a metallic subwavelength disk array, it can result in new confined modes, hereby named 'disks scattering slab modes' (DSSMs). By use of a ter...

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Main Authors:	Ding, Lan, Wang, Ke Jia, Wang, Wei, Zhu, De Feng, Yin, Chao Yun, Liu, Jin Song
Format:	Online
Language:	English
Published:	Nature Publishing Group 2013
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3749549/

id	pubmed-3749549
recordtype	oai_dc
spelling	pubmed-37495492013-08-22 Experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures Ding, Lan Wang, Ke Jia Wang, Wei Zhu, De Feng Yin, Chao Yun Liu, Jin Song Article A thin dielectric plate can support conventional slab modes such as leaky Fabry-Perot, guided waves and radiation modes. When the plate is coated on a metallic subwavelength disk array, it can result in new confined modes, hereby named 'disks scattering slab modes' (DSSMs). By use of a terahertz time-domain spectroscopy system, we experimentally verify the existence of two types of DSSMs in terahertz range: one we refer to as highly confined disks scattering Fabry-Perot-like modes (DSFPMs) and the other as, weakly confined disks scattering radiation-like modes (DSRMs). Spectral characteristics of these confined modes are measured and numerically simulated. Particularly, based on the experimental results and a dipole-scattering model developed here, we show that the features of the DSFPMs can be tuned by changing the filling fraction of the disk array. We believe these results can make important contributions to the designs of new terahertz devices, including tunable absorbers and filters. Nature Publishing Group 2013-08-22 /pmc/articles/PMC3749549/ /pubmed/23966179 http://dx.doi.org/10.1038/srep02493 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareALike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Ding, Lan Wang, Ke Jia Wang, Wei Zhu, De Feng Yin, Chao Yun Liu, Jin Song
spellingShingle	Ding, Lan Wang, Ke Jia Wang, Wei Zhu, De Feng Yin, Chao Yun Liu, Jin Song Experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures
author_facet	Ding, Lan Wang, Ke Jia Wang, Wei Zhu, De Feng Yin, Chao Yun Liu, Jin Song
author_sort	Ding, Lan
title	Experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures
title_short	Experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures
title_full	Experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures
title_fullStr	Experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures
title_full_unstemmed	Experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures
title_sort	experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures
description	A thin dielectric plate can support conventional slab modes such as leaky Fabry-Perot, guided waves and radiation modes. When the plate is coated on a metallic subwavelength disk array, it can result in new confined modes, hereby named 'disks scattering slab modes' (DSSMs). By use of a terahertz time-domain spectroscopy system, we experimentally verify the existence of two types of DSSMs in terahertz range: one we refer to as highly confined disks scattering Fabry-Perot-like modes (DSFPMs) and the other as, weakly confined disks scattering radiation-like modes (DSRMs). Spectral characteristics of these confined modes are measured and numerically simulated. Particularly, based on the experimental results and a dipole-scattering model developed here, we show that the features of the DSFPMs can be tuned by changing the filling fraction of the disk array. We believe these results can make important contributions to the designs of new terahertz devices, including tunable absorbers and filters.
publisher	Nature Publishing Group
publishDate	2013
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3749549/
_version_	1612004826569244672

Experimental verification and investigation of disks scattering slab modes in metal-dielectric heterostructures

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