A. A. Dubinov, V. Ya. Aleshkin, V. I. Gavrilenko, V. V. Rumyantsev, N. N. Mikhailov, S. A. Dvoretskii, V. V. Utochkin, S. V. Morozov, “THz laser generation on a hybrid surface plasmon in a HgCdTe-based structure”, Kvantovaya Elektronika, 2021, Volume 51, Number 2,Pages <nobr>158

This article is cited in 2 papers

Generation of THz radiation

THz laser generation on a hybrid surface plasmon in a HgCdTe-based structure

A. A. Dubinov^ab, V. Ya. Aleshkin^a, V. I. Gavrilenko^a, V. V. Rumyantsev^a, N. N. Mikhailov^c, S. A. Dvoretskii^c, V. V. Utochkin^a, S. V. Morozov^a

^a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod
^b National Research Lobachevsky State University of Nizhny Novgorod
^c Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk

Abstract: The possibility of amplifying a THz hybrid surface plasmon in a structure with an Hg_0.82Cd_0.18Te epitaxial film grown on a GaAs substrate and covered with a metal layer is investigated. It is shown that for a film thickness of 100 nm and a temperature of 80 K, the hybrid surface plasmon mode gain can be greater than external losses at a pump radiation intensity with a wavelength of 2.3 μm, exceeding 850 kW cm^-2. Additional doping of the Hg0.82Cd0.18Te layer with a donor impurity having a concentration of 4 × 10¹⁷ cm^-3 will lead to a 1.5-fold decrease in the threshold pump intensity.

Keywords: hybrid plasmon, terahertz radiation, laser.

Received: 07.10.2020