Recent progress in terahertz metamaterial modulators

Nanophotonics

Lin Hungyen¹  Degl’Innocenti Riccardo¹  Navarro-Cía Miguel² 

[1] Department of Engineering, University of Lancaster, Bailrigigg, LancasterLA1 4YW, UK;School of Physics and Astronomy, University of Birmingham, B15 2TTBirmingham, UK;

关键词: metamaterials;    modulators;    terahertz;   

DOI  :  10.1515/nanoph-2021-0803

来源: DOAJ

【 摘 要 】

The terahertz (0.1–10 THz) range represents a fast-evolving research and industrial field. The great interest for this portion of the electromagnetic spectrum, which lies between the photonics and the electronics ranges, stems from the unique and disruptive sectors where this radiation finds applications in, such as spectroscopy, quantum electronics, sensing and wireless communications beyond 5G. Engineering the propagation of terahertz light has always proved to be an intrinsically difficult task and for a long time it has been the bottleneck hindering the full exploitation of the terahertz spectrum. Amongst the different approaches that have been proposed so far for terahertz signal manipulation, the implementation of metamaterials has proved to be the most successful one, owing to the relative ease of realisation, high efficiency and spectral versatility. In this review, we present the latest developments in terahertz modulators based on metamaterials, while highlighting a few selected key applications in sensing, wireless communications and quantum electronics, which have particularly benefitted from these developments.

【 授权许可】

Unknown