Phys. Rev. Lett. 65, 3389–3392 (1990)Multimode interactions in cyclotron autoresonance maser amplifiersReceived 10 September 1990; published in the issue dated 31 December 1990 The interaction of transverse eigenmodes with a relativistic electron beam is analyzed in an overmoded cyclotron autoresonance maser amplifier, using a nonlinear self-consistent model and kinetic theory. It is shown that all of the coupled modes grow with the dominant unstable mode at the same growth rate, but suffer different launching losses. The phases of coupled modes are locked in the linear and nonlinear regimes. Simulations indicate that the rf power distribution among the interacting modes at saturation is insensitive to input power distribution but sensitive to detuning. © 1990 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.65.3389
DOI:
10.1103/PhysRevLett.65.3389
PACS:
42.52.+x, 52.35.Mw, 52.75.Ms
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