Phase-locking of a second-harmonic gyrotron oscillator using a quasi-optical circulator to separate injection and output signals

Guo, H.; Hoppe, Daniel; Rodgers, J.; Perez, Raul M.; Tate, J.P.; Conroy, B. L.; Granatstein, V. L.; Bhanji, Alaudin M.; Latham, P.E.; Nusinovich, Gregory S.; Nai-man, Liao; Chen, Shiaw-Huei

doi:10.1109/27.473201

Cited by 17 publications

(1 citation statement)

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“…Therefore, their spectral characteristics are of great interest to the community, and the gyrotron frequency tuning and stabilization are actively investigated. A number of studies considered active frequency manipulation by variation of the electron beam parameters [1]- [5], as well as phase locking by the external signal [6]- [8] and changing the spectral characteristics of the radiation (spectrum control), in particular, frequency stabilization by the wave reflected from the nonresonant load (theoretically [9]- [13] and experimentally [14]- [19]). Each of the methods has its advantages and limitations.…”

Section: Introductionmentioning

confidence: 99%

Experimental Demonstration of Gyrotron Frequency Stabilization by Resonant Reflection

Fokin

Богдашов

Novozhilova

et al. 2021

IEEE Electron Device Lett.

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This letter presents the results of an experimental and theoretical study of the gyrotron frequency stabilization by a partial reflection of its radiation from an external high-Q resonator. The experiment was carried out with a gyrotron operating in a continuous wave regime at a frequency of 28 GHz at the second cyclotron harmonic. The use of an external quasi-optical two-mirror resonator as a reflector made it possible to reduce the variation of the radiation frequency upon modulation of the guiding magnetic field by order of magnitude to 0.8 GHz/T. The experimental results are in good agreement with the calculations.

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