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Proceedings Paper

Nonlinear Efficiency Of Magnetized Free Electron Lasers And Auto Resonance Cyclotron Masers
Author(s): A. T. Lin
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Paper Abstract

The nonlinear efficiency of magnetized free electron lasers versus axial magnetic field has been investigated through particle simulations. The presence of the axial magnetic field in a free electron laser around gyroresonance is observed to introduce a strong long wavelength Raman backscattering instability which itself gives rise to electron trapping and caused the desired short wavelength radiation to saturate earlier than an unmagnetized free electron laser. The results of single mode particle simulations show that the nonlinear efficiency of a cyclotron maser operated in the auto resonance regime can reach 25% with beam energy = 1 Mev, beam current = lkA, and β, = 1/y. The output radiation frequency scale with beam energy according to γ2ΩO and the process converts both the longitudinal and transverse components of beam energy into radiation.

Paper Details

Date Published: 16 February 1984
PDF: 8 pages
Proc. SPIE 0453, Free-Electron Generators of Coherent Radiation, (16 February 1984); doi: 10.1117/12.947116
Show Author Affiliations
A. T. Lin, University of California at Los Angeles (United States)

Published in SPIE Proceedings Vol. 0453:
Free-Electron Generators of Coherent Radiation
Charles A. Brau; Stephen F. Jacobs; Marlan O. Scully, Editor(s)

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