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17 November 2020 Irregular and non-symmetrical cavities for high-harmonic THz gyrotrons
I. V. Bandurkin, Yu. K. Kalynov, I. V. Osharin, A. V. Savilov, D. Yu. Shchegolkov
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Proceedings Volume 11582, Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications; 115820K (2020) https://doi.org/10.1117/12.2580010
Event: Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications, 2020, Tomsk, Russian Federation
Abstract
To ensure high selectivity of excitation of the operating high-cyclotron-harmonic waves in gyrotrons, as well as to provide an increase in the efficiency of high-harmonic gyrotrons by decreasing Ohmic heating, we propose using resonators of special shapes. In this work, we describe axially-symmetrical cavities with one or more axial grooves with mode selective properties, as well as quasi-axially-symmetrical cavities with small azimuthal irregularities. The use of cavities of these types can be the way of achieving a stable single-mode gyrotron operation at frequencies of about 1 THz with a sufficiently high (several kW) output radiation power level.
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I. V. Bandurkin, Yu. K. Kalynov, I. V. Osharin, A. V. Savilov, and D. Yu. Shchegolkov "Irregular and non-symmetrical cavities for high-harmonic THz gyrotrons", Proc. SPIE 11582, Fourth International Conference on Terahertz and Microwave Radiation: Generation, Detection, and Applications, 115820K (17 November 2020); https://doi.org/10.1117/12.2580010
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KEYWORDS
Terahertz radiation
Microwave radiation
Applied physics
Continuous wave operation
Electron beams
Oscillators
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