Competition between the fundamental and the second harmonic in quasi-optical gyrotrons
In quasi-optical gyrotrons (QOG) using Fabry-Pérot resonators designed to operate at the fundamental, the second harmonic interaction could be important due to the fact that the quality factor Q is an increasing function of the frequency. Emissions, at frequencies twice the electron cyclotron frequency, have been observed experimentally in QOG, as well as in cylindrical gyrotrons. In order to understand the nature of this unwanted emission and its effects on the efficiency of the quasi-optical gyrotrons, a simulation code based on the slow time scale formalism was written, following the time evolution of the fundamental as well as the higher harmonic modes. Results from the simulations of the 100 GHz QOG experiment are presented.
Bibliographic Reference: Paper presented: 15th International Conference on Infrared and Millimeter Waves, Orlando, Florida (US), Dec. 10-14, 1990
Availability: Available from (1) as Paper EN 35759 ORA
Record Number: 199110217 / Last updated on: 1994-12-02
Original language: en
Available languages: en