Abstract
We study the time structure, the frequency composition, and the shot to shot fluctuations of the radiation emitted by a free-electron laser starting from shot noise in the electron beam longitudinal distribution, taking into account slippage and finite bunch length effects. We find a very different behavior when the bunch length, is much longer thatn the cooperation length, , or of the order of a few . The field evolution is dominated by slippage effects in both cases, and shows the presence of superradiant spikes.
- Received 14 July 1993
DOI:https://doi.org/10.1103/PhysRevLett.73.70
©1994 American Physical Society