Abstract

In simple undulators, electrons, which are initially uncorrelated, remain essentially uncorrelated as the electron bunch moves through the undulator. The radiation emitted in this case, colfed the undulator radiation, is analogous to the spontaneous emission in atomic systems. As the number of undulator periods N increases, the cumulative effects of the radiation electron-beam interaction could lead to a density modulation in the electron beam and an exponential amplification of the undulator radiation.

© 1987 Optical Society of America