Room temperature detection and emission of Terahertz radiation by plasma oscillations in nanometer size transistors

The channel of nanometre field effect transistor can act as a resonant cavity for plasma waves. The frequency of these plasma waves is in the Terahertz range and can be tuned by the gate bias. During the last few years Terahertz detection and emission related to plasma wave instabilities in nanometre size field effect transistors was demonstrated experimentally. In this work we review the recent experimental results on the resonant plasma wave detection and emission at room temperature.