In the gyrotrons designed for the terahertz frequency range, the issue of primary interest is to ensure stable single-mode generation during operation at modes that are synchronous with higher cyclotron harmonics. The fraction of ohmic losses in the cavity is essentially important for such devices, since it not only limits the power of the output radiation and the efficiency of the gyrotron, but also affects the stability of its operating regime. The possibility to mitigate these undesirable effects by reducing the ohmic loss fraction due to the choice of materials and the technology of cavity manufacture and/or the temperature regime is considered.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 64, No. 4, pp. 265–275, April 2021. Russian DOI: 10.52452/00213462_2021_64_04_265
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Zapevalov, V.E., Zuev, A.S., Parshin, V.V. et al. Reduction of Ohmic Losses in the Cavities of Low-Power Terahertz Gyrotrons. Radiophys Quantum El 64, 240–250 (2021). https://doi.org/10.1007/s11141-021-10127-2
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DOI: https://doi.org/10.1007/s11141-021-10127-2