Design, Technologies and Applications of High Power Vacuum Electronic Devices from Microwave to THz Band

Dear Colleagues,

Coherent electromagnetic radiation of sub-terahertz and terahertz frequency range with relatively high power has a number of specific features that make it very attractive for a wide range of fundamental and applied research in physics, chemistry, biology, and medicine. In particular, there can be mentioned spectroscopic applications (electron paramagnetic resonance spectroscopy, dynamic polarization of nuclear spins in nuclear magnetic resonance spectroscopy), plasma applications (diagnostics of dense plasmas in fusion devices, the creation of compact plasma objects), biochemical applications (management flow rate of reactions in organic chemistry, conformational changes of protein molecules), as well as an important applied problem of remote detection of sources of ionizing radiation. Currently, vacuum electronic sources cover over 12 orders of magnitude in power (mW-to-GW) and two orders of magnitude in frequency (0.1–10 THz). The aim of the present investigations is the development of radiation sources, including the development of new schemes of electron cyclotron masers, with record-breaking frequency, peak, and average power. Despite the many technical limits, such as, for example, the requirement of strong operating magnetic fields for gyrodevices, mode competition, high ohmic losses, the number of pulsed and CW radiation sources and the range of applications increase rapidly.

The last decade has contributed to the rapid progress in the development of high-power microwave sources, in particular of gyrotrons. This Special Issue aims to bring together information about the most striking theoretical and experimental results, new trends in development, modern remarkable applications, new demands in parameter enhancement, and future goals. Therefore, researchers are invited to submit their manuscripts to this Special Issue and contribute their models, proposals, reviews, and studies.

Prof. Dr. Mikhail Glyavin
Guest Editor

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