18 November 1989 Optical Guiding In The Cyclotron Autoresonance Maser
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Proceedings Volume 1039, 13th Intl Conf on Infrared and Millimeter Waves; (1989) https://doi.org/10.1117/12.978469
Event: 13th International Conference on Infrared and Millimeter Waves, 1987, Honolulu, HI, United States
Abstract
The effect of the electron beam on the propagation of a three-dimensional radiation beam in a cyclotron autoresonance maser (CARM) amplifier is investigated numerically. In the exponential gain regime, it is shown that the natural tendency of the radiation beam to spread diffractively is overcome and the radiation beam is focused due to the interaction with the electron beam. The nature of the focusing is found to depend on the relative magnitude of the Doppler-shifted wave frequency, wD=w-k,v, and the relativistic gyrofrequency, Ω. The radiation beam can he transported without defocusing following saturation only if wD is slightly larger than Ω. Efficiencies in excess of 50% can he attained through the use of a tapered magnetic field.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert G. Kleva, Baruch Levush, P. Sprangle, "Optical Guiding In The Cyclotron Autoresonance Maser", Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); doi: 10.1117/12.978469; https://doi.org/10.1117/12.978469
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