The purpose of this article is to present a review of the nonlinear effects associated with
relativistic electron-mass variation and the ponderomotive force in unmagnetized as well as …

Over the past decade a new source of coherent high-power radiation has been developed.
This source, called the free electron laser (FEL), is unique in that the radiation is tunable …

The main theme of this book is the interaction of electrons with electromagnetic waves in the
presence of periodic and quasi-periodic structures in vacuum, in view of applications in the …

The nonlinear evolution of the free-electron-laser amplifier is investigated numerically for a
configuration consisting of a helical wiggler and axial guide magnetic fields. A set of coupled …

Magnetostatic wiggler fields x^ cos k z+ y^ sin kz, commonly used to model the undulators of
free-electron lasers, violate Maxwell's equations and are" unrealizable." Realizable wigglers …

The collective interaction in a free-electron laser with combined helical wiggler and uniform
axial guide fields is presented in the linearized regime. The analysis involves a perturbation …

The electrostatic stability of the free-electron laser is studied for a configuration in which a
relativistic electron beam propagates through combined helical wiggler and axial guide …

The nonlinear evolution of free-electron lasers in the presence of an axial guide field is
investigated numerically. A set of coupled nonlinear differential equations is derived which …

The spontaneous and induced emission from a free-electron laser is treated for the case in
which an axial magnetic field is imposed in addition to the helical, axially periodic wiggler …

A fully self-consistent theory of the free-electron laser is derived in the collective regime
which includes all transverse variations in the wiggler field as well as the effects of a finite …