Investigation of the characteristics of the dual-band electromagnetic induction transparent-like terahertz spectrum in a grating-like structure. (22nd October 2021)

• Record Type: Journal Article
• Authors: Zhao, Chaoying; Hu, Jiahao
• Is Part Of: Journal of optics. Volume 23:Number 11(2021)
• Publication Date: 2021-10-22
• Subjects: electromagnetic induction transparent-like (EIT-like) -- metamaterial -- grating -- slow light; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8986/ac2dd9
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: In this paper, a new structure is proposed which is expected to realize a dual-band electromagnetically induced transparency (EIT)-like effect in the terahertz spectrum. It can be regarded as a metamaterial of grating-like elements composed of dual-band U-shaped resonators. The near-field coupling between bright modes can produce an EIT-like effect. After optimizing the parameters, our numerical simulated results are in good agreement with the theoretical analysis. The EIT-like effect can significantly reduce the group speed near the transparent window, and may gain more significant potential applications in slow-light transmission and optical storage.