Compton electron scattering stimulated

Stimulated Compton scattering regime. The situation is shown for the laboratory frame and the electron rest frame. 

Fig. 16. Feynmann-type diagram of the Stimulated Compton scattering process and nature of upper and lower states of Free Electron Laser transition".

Compton regime This denotes operation in a free-electron laser in which the dominant mechanism is stimulated Compton scattering. In this process, the wiggler field (which appears to be a backwards-propagating electromagnetic wave in the rest frame of the electrons) produces secondary electromagnetic waves by scattering off the electrons. 

Fedorov, M. V., Goreslavsky, S. P., and Letokhov, V. S. (1997). Pondermotive forces and stimulated Compton scattering of free electrons in a laser-field. Physical Review E, 55, 1015-1027. 

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