太赫兹人工表面等离子体共面激发与高<i>Q</i>传感

严德贤; 程钢; 李尔平; 李向军; 章雪茹; 吴依琳

doi:10.37188/CO.2022-0204

Volume 16 Issue 4

Jul. 2023

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Chinese Optics > 2023 > 16(4): 933-947.

YAN De-xian, CHENG Gang, LI Er-ping, LI Xiang-jun, ZHANG Xue-ru, WU Yi-lin. Coplanar excitation of terahertz spoof surface plasmon and high-Q sensing[J]. Chinese Optics, 2023, 16(4): 933-947. doi: 10.37188/CO.2022-0204

Citation:

YAN De-xian, CHENG Gang, LI Er-ping, LI Xiang-jun, ZHANG Xue-ru, WU Yi-lin. Coplanar excitation of terahertz spoof surface plasmon and high-Q sensing[J]. Chinese Optics, 2023, 16(4): 933-947. doi: 10.37188/CO.2022-0204

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Coplanar excitation of terahertz spoof surface plasmon and high-Q sensing

doi: 10.37188/CO.2022-0204

1.
College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
2.
Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information Engineering, China Jiliang University, Hangzhou 310018, China

Funds: Supported by National Key R&D Program of China (No. 2021YFF0600300); National Natural Science Foundation of China (No. 62001444); Natural Science Foundation of Zhejiang Province (No. LQ20F010009)

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Author Bio:
YAN De-xian (1991—), male, born in Wuwei, Gansu Province, Ph.D. and Associate Professor. He received the Ph.D. degree from Tianjin University in 2018. He is mainly engaged in terahertz microwave technology and devices. E-mail: yandexian1991@163.com

LI Er-ping (1962—), male, born in Shijiazhuang, Hebei Province, Ph.D. and Professor, Seek-truth Chair professor of Zhejiang University, IEEE Fellow and National Distinguished Expert. He received his Ph.D. degree in electronics and information engineering from the University of Sheffield, UK, in 1991. Now he is mainly engaged in electromagnetics, 5G communication and chip electromagnetic compatibility, plasma nanophotonics, etc. E-mail: liep@zju.edu.cn

LI Xiang-jun (1976—), male, born in Changzhi, Shanxi Province, Ph.D. and Associate Professor. He obtained his doctoral degree from Zhejiang University in 2011 and is mainly engaged in research on terahertz devices. E-mail: xiangjun_li@cjlu.edu.cn
Corresponding author: liep@zju.edu.cn
Received Date: 26 Sep 2022
Rev Recd Date: 11 Oct 2022

Available Online: 22 Nov 2022

Abstract

Abstract

In this paper, the coplanar excitation of terahertz Spoof Surface Plasmon (SSP) realized by using a single-layer grating meta-surface coupling method is proposed, which overcomes the disadvantages such as the reflection measurement when applying the medium couplers. The periodic grating and terahertz SSP composite structure are simultaneously constructed on the monolayer metal structure. When the terahertz waves are incident vertically, the wave vector of grating structures and the wave vector of SSPs are matched, and the SSP mode can be excited. The high Q value resonant peaks can be generated in the transmission spectrum, and the Q factor can reach 1923. The effects of the structural parameters on the grating-coupled meta-surface transmission spectrum and dispersion characteristics are also analyzed. In addition, based on the high Q resonant peak in the transmission spectrum of the designed structure, the high sensing sensitivity is about 67 GHz/RIU at the resonant center frequency of 0.22 THz. The structure proposed in this paper, which realizes terahertz SSP excitation and high Q sensing by treating a single-layer meta-surface structure, exhibits great application potential in many practical applications.
- terahertz meta-surface,
- spoof surface plasmon,
- high Q resonance,
- sensing

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References(22)

References

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