Nonlinear Efficiency Of Magnetized Free Electron Lasers And Auto Resonance Cyclotron Masers

A. T. Lin

doi:10.1117/12.947116

16 February 1984 Nonlinear Efficiency Of Magnetized Free Electron Lasers And Auto Resonance Cyclotron Masers

A. T. Lin

Proceedings Volume 0453, Free-Electron Generators of Coherent Radiation; (1984) https://doi.org/10.1117/12.947116
Event: Free-Electron Generators of Coherent Radiation, 1983, Orcas Island, United States

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.

Citation Download Citation

A. T. Lin "Nonlinear Efficiency Of Magnetized Free Electron Lasers And Auto Resonance Cyclotron Masers", Proc. SPIE 0453, Free-Electron Generators of Coherent Radiation, (16 February 1984); https://doi.org/10.1117/12.947116

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