Dual-band terahertz metamaterials with electromagnetically induced transparency-like enabling high-performance sensing

In this paper, a high-performance metamaterial sensor with a square split-ring resonator and a double circular split-ring resonator is proposed, which can simultaneously excite broad-band and narrow-band electromagnetically induced transparency-like (EIT-like) effects in the terahertz band. First, t...

Full description

Saved in:
Bibliographic Details
Published in:Journal of modern optics 2024-02, Vol.71 (1-3), p.75-81
Main Authors: Li, B., Wei, L. G., Li, J. K.
Format: Article
Language:English
Subjects:
dual-band
electromagnetically induced transparency-like
Metamaterials
Parameter sensitivity
Refractivity
Resonators
sensing characteristics
Terahertz frequencies
Terahertz metamaterials
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, a high-performance metamaterial sensor with a square split-ring resonator and a double circular split-ring resonator is proposed, which can simultaneously excite broad-band and narrow-band electromagnetically induced transparency-like (EIT-like) effects in the terahertz band. First, the mechanisms of the dual-band EIT-like effects have been revealed by the analyses of the transmission spectra and surface current distributions in the metamaterial. Then, the influences of structural parameters on the dual-band EIT-like are discussed further. Finally, the metamaterial is very sensitive to the change of the refractive index of the surrounding media, and the sensitivity of the dual-band EIT-like resonances can reach 150 GHz/RIU and 237.5 GHz/RIU and the quality factor values are 1.67 and 7.92, respectively. The proposed metamaterial broadens the pathway for the excitation of multi-band EIT-like effects and offers promising applications in multi-frequency sensors, filters and many other aspects.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340.2024.2395980