Design Enhancement of the 460 GHz, Second Harmonic Gyrotron Oscillator Through Its Dispersion Diagram

All high power radio frequency (RF) sources have their own dispersion diagram, giving the relation between the output frequency of the device and the axial wave number component of the operating waveguide wave mode. This diagram gives the most important characteristics about the source and in this work it was used as a tool for the device design enhancement. From this diagram one can change the input design parameters in order to get the best dispersion diagram fitting with standard one. In this work, the dispersion diagram for the 460 GHz second harmonic gyrotron oscillator studied previously by Hornstein (2001) was plotted and the main characteristics of these kinds of gyrotrons were observed from the diagram which replies the precision of the design.