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Ultrahigh-Q terahertz sensor based on simple all-dielectric metasurface with toroidal dipole resonance
Jiang, Xiao-Qiang1,2; Fan, Wen-Hui1,2,3; Chen, Xu1; Yan, Hui1,2
Department瞬态光学研究室
2021-10-01
Source PublicationAPPLIED PHYSICS EXPRESS
ISSN1882-0778;1882-0786
Volume14Issue:10
Contribution Rank1
Abstract

A simple all-dielectric metasurface with symmetric structure, exhibiting strong toroidal dipole (TD) resonance and ultrahigh quality factor (Q-factor), is proposed. The physical mechanisms of the TD resonance are investigated by calculating the electromagnetic field and the scattering power of multipoles. Simulated results demonstrate that the Q-factor is up to 3.71 x 10(4) and the corresponding figure of merit is 636.7. Moreover, the TD resonance can be excited under both x- and y-polarized incident terahertz waves due to the symmetric structure. The remarkable performances make the proposed metasurface has feasible capability for biological and chemical sensing in terahertz range.

Keywordterahertz metasurface toroidal dipole sensing
DOI10.35848/1882-0786/ac27b7
Indexed BySCI ; EI
Language英语
WOS IDWOS:000700765000001
PublisherIOP PUBLISHING LTD
EI Accession Number20214111016451
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/95084
Collection瞬态光学研究室
Corresponding AuthorFan, Wen-Hui
Affiliation1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Xiao-Qiang,Fan, Wen-Hui,Chen, Xu,et al. Ultrahigh-Q terahertz sensor based on simple all-dielectric metasurface with toroidal dipole resonance[J]. APPLIED PHYSICS EXPRESS,2021,14(10).
APA Jiang, Xiao-Qiang,Fan, Wen-Hui,Chen, Xu,&Yan, Hui.(2021).Ultrahigh-Q terahertz sensor based on simple all-dielectric metasurface with toroidal dipole resonance.APPLIED PHYSICS EXPRESS,14(10).
MLA Jiang, Xiao-Qiang,et al."Ultrahigh-Q terahertz sensor based on simple all-dielectric metasurface with toroidal dipole resonance".APPLIED PHYSICS EXPRESS 14.10(2021).
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