Nonlinear theory of quasi-optical gyrotron with an electron beam at an oblique angle

Wang, C.-Y.,Kreischer, K.E.,Temkin, R.J.

Electron Devices, IEEE Transactions （1990）

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摘要

In the quasi-optical gyrotron with a Fabry-Perot cavity, one can inject the electron beam at an oblique angle with respect to the optical axis of the cavity. This angle has a great influence on the gain mechanism, Doppler frequency shift, and saturation length of interaction. Numerical simulations show that two regimes of operation exist when the angle changes from 0° to 90°. When the angle is small (including 0°), the Doppler-shifted regime is identified with small negative optimized detuning and small optimized E-field amplitude. When the angle is large (including 90°), the gyrotronlike regime is identified with large negative optimized detuning and large optimized E-field amplitude. The quasi-optical gyrotron is quite efficient for harmonic operation

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关键词

doppler effect,cavity resonators,electron beams,gyrotrons,doppler frequency shift,doppler-shifted regime,fabry-perot cavity,electron beam,gain mechanism,gyrotronlike regime,harmonic operation,interaction saturation length,microwave tubes,nonlinear theory,oblique angle,optimized e-field amplitude,optimized detuning,quasi-optical gyrotron,quasioptical type,radiation,electrons

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