Terahertz biophotonics opens up significant prospects for various biomedical applications. In this paper, we propose a scheme of a compact terahertz device, in which the effect of generation and amplification of terahertz radiation is achieved through the interaction of an electron beam, moving in a vacuum, with an electromagnetic wave of a corrugated waveguide. It is shown that both the generation and amplification mode and the detection mode of terahertz waves are possible in the considered device scheme.
Shchurova et al. (Mon,) studied this question.