Suppressing of parasitic oscillation in a multimode gyrotron by external signal or by reflection
Natalia V. Grigorieva, Maria M. Melnikova, Arina A. Rodina, Andrey G. Rozhnev, Nikita M. Ryskin (Kotelnikov Institute of Radio-Engineering and Electronics RAS, Saratov Branch &
Saratov State University)
Abstract
Gyrotrons are the most powerful sources of sub-THz and THz bands, which are of great importance for many applications such as NMR spectroscopy with dynamic nuclear polarization (DNP/NMR), plasma diagnostics, non-destructive inspection, biomedical applications, etc. All these applications require stable single-mode operation. On the other hand, modern gyrotrons operate on high-order modes of oversized cavities, so mode-competition phenomena play an important role. Apart from traditional methods of mode selection, in recent years a significant attention has been paid to injection locking of a gyrotron by an external signal, as well to self-injection locking by a signal reflected from a remote load. In this paper, we present the results of theoretical analysis and numerical simulation of using both these approaches for suppression of parasitic modes.
Speaker
Natalia V. Grigorieva
Saratov Branch, Kotelnikov Institute of Radio-Engineering and Electronics RAS & Saratov State University
Россия
Discussion
Ask question
