On the Amplification of Terahertz Radiation by High-Q Resonant Plasmons in a Periodic Graphene Bilayer under Plasmon-Mode Anticrossing
- Authors: Polischuk O.V.1, Fateev D.V.1,2, Popov V.V.1
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Affiliations:
- Kotel’nikov Institute of Radio Engineering and Electronics (Saratov Branch), Russian Academy of Sciences
- Saratov State University
- Issue: Vol 53, No 9 (2019)
- Pages: 1211-1216
- Section: Xxiii International Symposium “Nanophysics and Nanoelectronics”, Nizhny Novgorod, March 11–14, 2019
- URL: https://journals.rcsi.science/1063-7826/article/view/206810
- DOI: https://doi.org/10.1134/S106378261909015X
- ID: 206810
Cite item
Abstract
The spectrum of amplification of terahertz radiation in a structured active graphene bilayer consisting of two identical periodic graphene microribbon arrays separated by a thin dielectric barrier layer is theoretically investigated. The system supports optical and acoustic plasmon modes. The resonant frequencies of the optical and acoustic modes change oppositely with the dielectric-layer thickness, which allows plasmon-mode anticrossing. It is shown that the investigated graphene structure is characterized by a strong plasmon response and giant terahertz-radiation amplification at plasma resonance frequencies in the vicinity of the anticrossing between the optical and acoustic plasmon modes at room temperature.
Keywords
About the authors
O. V. Polischuk
Kotel’nikov Institute of Radio Engineering and Electronics (Saratov Branch), Russian Academy of Sciences
Author for correspondence.
Email: polischuk.sfire@mail.ru
Russian Federation, Saratov, 410019
D. V. Fateev
Kotel’nikov Institute of Radio Engineering and Electronics (Saratov Branch), Russian Academy of Sciences; Saratov State University
Email: popov_slava@yahoo.co.uk
Russian Federation, Saratov, 410019; Saratov, 410012
V. V. Popov
Kotel’nikov Institute of Radio Engineering and Electronics (Saratov Branch), Russian Academy of Sciences
Author for correspondence.
Email: popov_slava@yahoo.co.uk
Russian Federation, Saratov, 410019