A. A. Dubinov, V. Ya. Aleshkin, “Model of a terahertz quantum-cascade laser based on a two-dimensional plasmon”, Fizika i Tekhnika Poluprovodnikov, 2021, Volume 55, Issue 10,Pages <nobr>869

This article is cited in 2 papers

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. Dubinov^ab, V. Ya. Aleshkin^ab

^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

DOI: 10.21883/FTP.2021.10.51435.34