The instability of terahertz plasma waves in cylindrical FET

Dongao LI (李东澳); Liping ZHANG (张丽萍); Hongmei DU (杜洪梅)

doi:10.1088/2058-6272/aaf874

Plasma Science and Technology > 2019 > 21(4): 45002-045002. > DOI: 10.1088/2058-6272/aaf874

Dongao LI (李东澳), Liping ZHANG (张丽萍), Hongmei DU (杜洪梅). The instability of terahertz plasma waves in cylindrical FET[J]. Plasma Science and Technology, 2019, 21(4): 45002-045002. DOI: 10.1088/2058-6272/aaf874

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The instability of terahertz plasma waves in cylindrical FET

School of Sciences, Lanzhou University of Technology, Lanzhou 730050, People’s Republic of China

Funds: This work was supported by National Natural Foundation of China (No. 10975114), Research Projects of Higher Education of Gansu Province (No. 2017A-016) and HongLiu first-class disciplines Development Program of Lanzhou University of Technology.

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Received Date: September 26, 2018

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Abstract

Abstract

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.
- THz plasma waves,
- cylindrical field effect transistor,
- oscillation frequency

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The instability of terahertz plasma waves in cylindrical FET

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