27 February 1981 Operation Of A Gyrotron At The Fundamental And Second Harmonic
Author Affiliations +
Proceedings Volume 0259, Millimeter Optics; (1981) https://doi.org/10.1117/12.959638
Event: 1980 Huntsville Technical Symposium, 1980, Huntsville, United States
A formalism is developed for determining the possibility of operation of a gyrotron at both the fundamental, w = wc in a TEmpq mode and at the second harmonic, w' = 2wc, in a TEm'p'q' mode. This formalism is then applied to two physical problems. First, the conditions are derived for conversion of a gyrotron from operation at w = wc to operation at w' = 2wc. Such a conversion is shown to be most practical when the mode at w = wc is a higher order mode (m or p large) and/or the beam position is at a higher radial maximum. Several specific examples are considered. Second, the conditions are derived for oscillation of a parasitic mode at w = wc in a gyrotron designed for operation at w' = 2wc. Again, this problem is more severe for higher order modes and beams at larder radii. For a whispering gallery mode TEm'11 oscillating at w' = 2wc, if m' is odd, there is a resonant para-sitic whispering gallery mode TEmll at w = wc, with m = 0.5 (m' - 1). This would be expected to spoil the 2wc operation of all TEmy 11 modes, with m' odd.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. J. Temkin, R. J. Temkin, K. E. Kreischer, K. E. Kreischer, } "Operation Of A Gyrotron At The Fundamental And Second Harmonic", Proc. SPIE 0259, Millimeter Optics, (27 February 1981); doi: 10.1117/12.959638; https://doi.org/10.1117/12.959638


Nonlinear theory of relativistic backward wave oscillators
Proceedings of SPIE (December 01 1990)
Bunched annular beam equilibrium and confinement
Proceedings of SPIE (August 15 2001)
The Free Electron Laser
Proceedings of SPIE (January 20 1978)
Frequency Step-Tunable Gyrotron
Proceedings of SPIE (November 18 1989)
Parametric resonance in vircator with applied magnetic field
Proceedings of SPIE (September 08 1995)

Back to Top