Issue 11, 2022
From the journal:

Nanoscale Advances

Enhanced extraordinary terahertz transmission through coupling between silicon resonators†

Jinmei Song,a   Yanpeng Shi, ORCID logo *a   Meiping Li,a   Xiaoyu Liu,a   Xiaodong Wang, ORCID logo b   Fuhua Yangb  and  Huayu Fenga  

* Corresponding authors

a School of Microelectronics, Shandong University, Jinan 250100, China
E-mail: ypshi@sdu.edu.cn

b Engineering Research Center for Semiconductor Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

Abstract

By using Mie resonance coupling effects, low-loss silicon particles as receiving or transmitting antennas can strongly localize the electromagnetic field. Enhanced extraordinary optical transmission (EEOT) is generated by placing two such silicon particles symmetrically on both sides of subwavelength hole arrays in the terahertz (THz) region. When the hole radius r is 17 times smaller than the resonance wavelength λ (r/λ = 0.06), the enhancement factors of the resonator–hole and the resonator–resonator coupling structures are 154- and 629-fold compared to that of the hole-only structure, respectively. The current distribution, magnetic field and Poynting vector are numerically simulated to reveal the mechanism of the proposed structure. Moreover, the Mie resonance coupling and the induced THz EEOT can be tuned in a wide frequency range. Our results provide a reference for the miniaturization of THz systems.

Graphical abstract: Enhanced extraordinary terahertz transmission through coupling between silicon resonators

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Article information

DOI
https://doi.org/10.1039/D1NA00886B
Article type
Paper
Submitted
23 Dec 2021
Accepted
30 Apr 2022
First published
02 May 2022
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2022,4, 2494-2500

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Enhanced extraordinary terahertz transmission through coupling between silicon resonators

J. Song, Y. Shi, M. Li, X. Liu, X. Wang, F. Yang and H. Feng, Nanoscale Adv., 2022, 4, 2494 DOI: 10.1039/D1NA00886B

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