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Computer Optics, 2020, Volume 44, Issue 3, Pages 325–332
DOI: https://doi.org/10.18287/2412-6179-CO-648
(Mi co794)
 

OPTO-IT

Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene»

A. S. Abramov, D. A. Evseev, D. I. Sementsov

Ulyanovsk State University, Ulyanovsk, Russia
References:
Abstract: We investigated optical-range waveguide modes propagating in a semiconductor film sandwiched between two graphene plates. The mode characteristics were shown to depend on the chemical potential of graphene and the film thickness. Based on the numerical analysis, we obtained dispersion relations for the first waveguide modes, frequency dependences of their group and phase velocities, and the distribution of the energy flux density in the structure. We discovered the presence of spectral bands characterized by small phase and negative group velocities of the waveguide modes. The possibility of tuning the waveguide mode by changing the chemical potential of graphene and the thickness of the semiconductor film was established.
Keywords: dispersion, graphene, semiconductor waveguide structure, slow waves, negative group velocity.
Funding agency Grant number
Ministry of Science and Higher Education of the Russian Federation 3.6825.2017/ Á×
Russian Foundation for Basic Research 18-42-730001
18-42-730005
The work was partially funded by the Ministry of Science and Education of the Russian Federation (state assignment No. 3.6825.2017/BCh) and the Russian Foundation of Basic Research (agreement No. 18-42-730001, 18-42-730005).
Received: 17.10.2019
Accepted: 26.12.2019
Document Type: Article
Language: Russian
Citation: A. S. Abramov, D. A. Evseev, D. I. Sementsov, “Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene»”, Computer Optics, 44:3 (2020), 325–332
Citation in format AMSBIB
\Bibitem{AbrEvsSem20}
\by A.~S.~Abramov, D.~A.~Evseev, D.~I.~Sementsov
\paper Waveguided modes in a planar structure «graphene – thin semiconductor film – graphene»
\jour Computer Optics
\yr 2020
\vol 44
\issue 3
\pages 325--332
\mathnet{http://mi.mathnet.ru/co794}
\crossref{https://doi.org/10.18287/2412-6179-CO-648}
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