400 GHz二次谐波振荡复腔回旋管的频率测量

2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Pub Date : 2020-11-08 DOI:10.1109/IRMMW-THz46771.2020.9370438

M. Fukunari, Taisei Ozura, Masato Watanabe, Y. Yamaguchi, Y. Tatematsu, T. Saito, M. M. Melnikova, A. Rozhnev, N. Ryskin

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引用次数: 0

摘要

为了提高回旋管在400 GHz次谐波振荡中的模式选择性能，设计了复杂腔体。选择te8,3和te8,5模式的组合来提供谐振耦合。在实验中，许多基本模和若干次谐波模在第一腔或第二腔中独立振荡。然而，在te8,3 / te8,5模式的工作磁场区未观察到基本振荡。成功地将腔体半径的制造误差控制在小于1 $\mu\mathrm{m}$。通过频率测量观察到设计模态的振荡。然而，与te3,5模式发生了竞争。

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Frequency Measurements of a Complex-Cavity Gyrotron for 400 GHz Second-Harmonic Oscillation

A complex cavity was fabricated to improve the mode selection property of a gyrotron for the 400 GHz second-harmonic oscillation. A combination of the TE8,3and the TE8,5modes was selected to provide resonant coupling. In the experiment, many fundamental and several second-harmonic modes oscillated independently in either the first or the second cavity. However, no fundamental oscillation was observed in the operation magnetic field region of the TE8,3/TE8,5 mode. The fabrication error of the cavity radii was successfully controlled to be smaller than 1 $\mu\mathrm{m}$. The oscillation of the design mode was observed by the frequency measurements. However, a mode competition with the TE3,5 mode occurred.

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2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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