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Viscous Hydrodynamic Model of Non-linear Plasma Oscillations in Two- Dimensional Gated Conduction Channels and Application to the Detection of Terahertz Signals

机译:二维门控导通道中非线性等离子体振荡的粘性流体动力学模型及其在太赫兹信号检测中的应用

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摘要

The conduction channel of a heterostructure High Electron Mobility Transistor can act as a plasma wave resonator for charge density oscillations at frequencies significantly higher than the transistor cut-off frequency in a short channel device. In the Dyakonov-Shur detector a short channel HEMT is used for the resonant tunable detection of electromagnetic radiation in the low terahertz range. Here I evaluated the resonant nonlinear response and obtained the temperature dependence of the quality factor of the plasma resonance. I find that in high mobility gated semiconductor conduction channels the quality of the resonance is limited by the temperature dependent viscosity of the electron fluid.

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