CHERENKOV-TYPE STIMULATED EMISSION IN GRAPHENE-BASED SYSTEMS
https://doi.org/10.29235/1561-8323-2018-62-1-33-40
Abstract
A mechanism of stimulated emission of electromagnetic radiation by an electron beam in metal carbon nanotubes and graphene is theoretically considered. Three basic properties of graphene and carbon nanotubes: strong slowing down of surface electromagnetic waves, anomalously large electron free path length, and extremely high electron current density to be reached in the structures considered allow us to propose them as candidates for the development of Cherenkovtype nanoscale emitters analogous to a traveling-wave tube and a free electron-based laser. In graphene/polymer multi-layered structures exposed to an external electron beam, the generation is possible on a macroscopic scale, and the generation frequency tuning is proposed by varying the graphene doping, the number of graphene sheets, a distance between sheets, etc.
Keywords
Supporting agencies: The work was sponsored by the Projects of the Belarusian Republican Foundation for Fundamental Research (Ф17Arm-025) and the U.S. Air Force through CRDF Global Agreement grant (AF20-15-61804-1).
About the Authors
Konstantin G. Batrakov
Institute for Nuclear Problems of the Belarusian State University
Belarus
Belarus
Ph. D. (Physics and Mathematics), Assistant Professor
11, Bobruiskaya Str., 220030, Minsk
Sergey A. Maksimenko
Institute for Nuclear Problems of the Belarusian State University
Belarus
Belarus
D. Sc. (Physics and Mathematics), Professor, Director
11, Bobruiskaya Str., 220030, Minsk
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