Amplification of terahertz radiation in a plasmon n–i–p–i graphene structure with charge-carrier injection
- Authors: Polischuk O.V.1, Fateev D.V.1, Popov V.V.1,2
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Affiliations:
- Kotelnikov Institute of Radio Engineering and Electronics
- National Research Saratov State University
- Issue: Vol 51, No 11 (2017)
- Pages: 1460-1465
- Section: XXI International Symposium “Nanophysics and Nanoelectronics”, Nizhny Novgorod, March 13–16, 2017
- URL: https://journals.rcsi.science/1063-7826/article/view/201622
- DOI: https://doi.org/10.1134/S1063782617110240
- ID: 201622
Cite item
Abstract
The absorption/amplification spectrum of terahertz radiation in inhomogeneous graphene (n–i–p–i structure) with a periodic dual metal grating is theoretically investigated. It is shown that the amplification of terahertz radiation sharply increases at the plasmon-resonance frequency, when losses due to electron scattering and emission are balanced by the plasmon gain (related to the stimulated radiative interband recombination of electron–hole pairs in the inverted region of graphene).
About the authors
O. V. Polischuk
Kotelnikov Institute of Radio Engineering and Electronics
Author for correspondence.
Email: polischuk.sfire@mail.ru
Russian Federation, Saratov, 410019
D. V. Fateev
Kotelnikov Institute of Radio Engineering and Electronics
Email: polischuk.sfire@mail.ru
Russian Federation, Saratov, 410019
V. V. Popov
Kotelnikov Institute of Radio Engineering and Electronics; National Research Saratov State University
Email: polischuk.sfire@mail.ru
Russian Federation, Saratov, 410019; Saratov, 410012