Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Denis V. Fateev"'
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
Abstract We propose a concept of an electrically controllable plasmonic directional coupler of terahertz signal based on a periodical structure with an active (with inversion of the population of free charge carriers) graphene with a dual grating gat
Externí odkaz:
https://doaj.org/article/6cc2e024736d4b0db56e10d0cfa29017
Autor:
Juan A. Delgado-Notario, Wojciech Knap, Vito Clericò, Juan Salvador-Sánchez, Jaime Calvo-Gallego, Takashi Taniguchi, Kenji Watanabe, Taiichi Otsuji, Vyacheslav V. Popov, Denis V. Fateev, Enrique Diez, Jesús E. Velázquez-Pérez, Yahya M. Meziani
Publikováno v:
Nanophotonics, Vol 11, Iss 3, Pp 519-529 (2022)
Terahertz (THz) waves have revealed a great potential for use in various fields and for a wide range of challenging applications. High-performance detectors are, however, vital for exploitation of THz technology. Graphene plasmonic THz detectors have
Autor:
Denis V. Fateev, Vyacheslav V. Popov
Publikováno v:
Semiconductors. 54:941-945
The intrinsic transverse-magnetic modes of graphene with spatial dispersion are investigated theoretically in the hydrodynamic regime in a terahertz frequency range. It is revealed that spatial dispersion is caused by the diffusion electron-transport
Publikováno v:
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
Scientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
We propose a concept of an electrically controllable plasmonic directional coupler of terahertz signal based on a periodical structure with an active (with inversion of the population of free charge carriers) graphene with a dual grating gate and num
Publikováno v:
Physical Review B. 103
The possibility of excitation and amplification of terahertz plasmons in a structure containing a layer of graphene with charge-carrier drift and a layer of graphene without carrier drift is theoretically investigated. The plasmon excitation in the g
Publikováno v:
Semiconductors. 53:1164-1169
The power conversion of a terahertz wave normally incident on a periodic graphene structure to propagating-plasmon power is theoretically studied. The conditions of the maximum conversion of the incident radiation power to the propagating-plasmon pow
Publikováno v:
Semiconductors. 53:1211-1216
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 suppo
Publikováno v:
Solid-State Electronics. 157:20-24
The rectification of terahertz radiation in a periodically almost-depleted graphene structures with dual grating gate is studied. Plasmonic electron-hole ratchet based rectified current grows with decreasing the Fermi energy of charge carriers in the
Publikováno v:
Semiconductors. 52:1534-1539
The dependence of the plasmon terahertz resonant frequency in the generation mode on the quasi-Fermi energy in the active (ungated) region of graphene with an inverse charge carrier population and on the Fermi energy in the gated p- and n-type region
Autor:
V. V. Popov, K. V. Mashinsky, I. M. Moiseenko, O. V. Polischuk, Denis V. Fateev, Mikhail Yu. Morozov
Publikováno v:
Physical Review Applied. 15
The achievement of the laser regime upon the excitation of weak plasmon modes in structures based on active graphene has been theoretically investigated. The weak ``acoustic'' plasmon modes in two-layer structures and weak ``nonradiative'' gated mode