We present the results of experimental studies of submillimeter-wave gyrotrons, which were obtained in the Research Center for Development of Far-Infrared Region of Fukui University (Japan). Distinctive features of the systems forming helical electron beams in submillimeter-wave gyrotrons are described. The results of the theoretical studies, which were aimed at excitation of higher harmonics in submillimeter-wave gyrotrons, reducing the operating voltage, and creating devices with smooth wideband tuning of the generation frequency, are presented. It is shown that modern gyrotrons are capable of ensuring continuous-wave generation at the frequencies from 200 to 400 GHz at a power level of up to hundreds of watts, and up to tens of kilowatts in the pulse-generation regime.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 52, No. 7, pp. 557–568, July 2009.
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Glyavin, M.Y., Idehara, T., Manuilov, V.N. et al. Studies of continuous-wave submillimeter-wave gyrotrons for spectroscopy and diagnostics of various media. Radiophys Quantum El 52, 500–510 (2009). https://doi.org/10.1007/s11141-009-9153-8
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DOI: https://doi.org/10.1007/s11141-009-9153-8