Nonlinear theory of quasioptical gyrotron with an electron beam at an oblique angle
Abstract
In the quasioptical gyrotron with a FabryPerot 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 there exist two regimes of operation when the angle changes from 0 to 90 deg. When the angle is small (including 0 deg), the Dopplershifted regime is identified with small negative optimized detuning and small optimized Efield amplitude. When the angle is large (including 90 deg), the gyrotronlike regime is identified with large negative optimized detuning and large optimized Efield amplitude. The quasioptical gyrotron is quite efficient for harmonic operation.
 Publication:

IEEE Transactions on Electron Devices
 Pub Date:
 March 1990
 DOI:
 10.1109/16.47800
 Bibcode:
 1990ITED...37..833W
 Keywords:

 Beams (Radiation);
 Cyclotron Resonance Devices;
 Digital Simulation;
 Electron Beams;
 Radiation Distribution;
 Submillimeter Waves;
 Doppler Effect;
 Nonlinear Equations;
 Electronics and Electrical Engineering