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This article is cited in 1 scientific paper (total in 1 paper)
XXV International Symposium "Nanophysics and Nanoelectronics", Nizhny Novgorod, March 9-12, 2021
Model of a terahertz quantum-cascade laser based on a two-dimensional plasmon
A. A. Dubinovab, V. Ya. Aleshkinab a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod
b Lobachevsky State University of Nizhny Novgorod
Abstract:
The characteristics of a two-dimensional plasmon amplified in an active medium based on a terahertz quantum-cascade structure are calculated. It is shown that, for realistic parameters of GaAs/AlGaAs quantum-well structures (mobility of 2 $\times$ 10$^5$ cm$^2$ V$^{-1}$ s$^{-1}$ for an electron concentration of 5 $\times$ 10$^{11}$ cm$^{-2}$ and temperatures up to 77 K), the gain experienced by two-dimensional plasmons can be as high as 1500 cm$^{-1}$ at a frequency of 2.3 THz. Furthermore, due to strong localization of the plasmon electric field near a quantum well, a quantum-cascade active region with only a few periods is sufficient for amplification.
Keywords:
plasmon, quantum-cascade laser, terahertz frequency range, quantum well.
Received: 12.04.2021 Revised: 19.04.2021 Accepted: 19.04.2021
Citation:
A. A. Dubinov, V. Ya. Aleshkin, “Model of a terahertz quantum-cascade laser based on a two-dimensional plasmon”, Fizika i Tekhnika Poluprovodnikov, 55:10 (2021), 869–871; Semiconductors, 55:11 (2021), 828–830
Linking options:
https://www.mathnet.ru/eng/phts4954 https://www.mathnet.ru/eng/phts/v55/i10/p869
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