We present here the results of a non-linear numerical investigation of a high-harmonic gyro-peniotron oscillator design which uses a slotted cylindrical magnetron-type cavity. Our modeling shows that very high efficiency ( 60%) can be achieved at high harmonics (s > 3), and that the operation current can be dramatically reduced by the addition of slots. We find that the start oscillation current may decrease with harmonic number in a slotted device, unlike the smooth walled gyrotron where start oscillation current always increases with increasing harmonic number. This greatly favors the use of a slotted cavity for high harmonic operation. The gyro-peniotron oscillator in a slotted cavity appears attractive as a means of achieving millimeter wave emission.
"Non-Linear Analysis Of A Gyro-Peniotron Oscillator", Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); doi: 10.1117/12.978525; https://doi.org/10.1117/12.978525