Gain length fitting formula for free-electron lasers with strong space-charge effects

Quantum effects in high-gain free-electron lasers.

A many-particle fully quantized theory for a free-electron laser which is valid in the high-gain regime is presented. We examine quantum corrections for the high-gain single-pass free-electron laser. It is shown that quantum effects become significant when the photon energy becomes comparable to the gain bandwidth. The initiation of the free-electron laser process from quantum fluctuations in t...

Inclusion of Space-Charge Effects with Maxwell's Equations in the Single-Particle Analysis of Free-Electron Lasers

In free-electron lase:rs, the motion of electrons is governed by the Lorentz force equations in the presence of a radiation field. The variation of the radiation field then follows from Maxwell equations in which the modulated electron current acts as a source. A self-consistent analysis, which completely incorporates these two concepts, is presented to describe the behavior of the radiation fi...

High-Gain Free Electron Lasers Using Induction Linear Accelerators

High-power free electron lasers (FEL’s) can be realized using induction linear accelerators as the source of the electron beam. These accelerators are currently capable of producing intense cwrents (102-104 A) at moderately high energy (1-50 MeV). Experiments using a 500 A, 3.3 MeV beam have produced 80 MW of radiation at 34.6 GHz and are in good agreement with theoretical analysis. Future expe...

Optical gain, phase shift, and profile in free-electron lasers.

I Free Electron Lasers*