Bending and Focusing Effects in an FEL Oscillator. I. Simple Models

摘要

The combination of wiggler, electron beam, and optical beam produces not only gain, but also refractive effects. These effects have been modeled for an oscillator configuration with a simple prism and lens. An instability is found to occur whenever the focal strength of the electron beam is sufficiently large. An estimate has been made of the magnitude of these effects and we present a discussion of the likely consequences. (ERA citation 11:054537)