The instability of terahertz plasma waves in cylindrical FET

In this paper, the Dyakonov-Shur instability of terahertz (THz) plasma waves has been analyzed in gated cylindrical field effect transistor (FET). In the cylindrical FET, the hydrodynamic equations in cylindrical coordinates are used to describe the THz plasma wave in two-dimensional electronic gas....

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Published in:Plasma science & technology 2019-04, Vol.21 (4), p.45002
Main Authors: LI, Dongao, ZHANG, Liping, DU, Hongmei
Format: Article
Language:English
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cylindrical field effect transistor
oscillation frequency
THz plasma waves
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creator LI, Dongao
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DU, Hongmei
description In this paper, the Dyakonov-Shur instability of terahertz (THz) plasma waves has been analyzed in gated cylindrical field effect transistor (FET). In the cylindrical FET, the hydrodynamic equations in cylindrical coordinates are used to describe the THz plasma wave in two-dimensional electronic gas. The research results show that the oscillation frequency of the THz plasma wave is increased by increasing the component of wave in the circumferential direction, but instability increment of the THz plasma wave are increased by increasing the radius of channel.
doi_str_mv 10.1088/2058-6272/aaf874
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subjects cylindrical field effect transistor
oscillation frequency
THz plasma waves
title The instability of terahertz plasma waves in cylindrical FET
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