Influence of Multiple Electron-Scattering on the Gain in a Gas-Loaded Free-Electron Laser

TitleInfluence of Multiple Electron-Scattering on the Gain in a Gas-Loaded Free-Electron Laser
Publication TypeJournal Article
Year of Publication1995
AuthorsV.V Goloviznin, P.W van Amersfoort
JournalPhysical Review E
Volume52
Number1
Pagination986-997
Date PublishedJul
ISBN Number1063-651X
Abstract

We present an analysis of the small-signal gain in the gas-loaded free-electron laser. Multiple scattering of electrons by the atoms of the gas inside the optical cavity is shown to lead to two additional effects, as compared to the case of a vacuum free-electron laser: a loss of coherence between different parts of the electron trajectory and an enhancement of the phase ''jitter.'' Both effects become increasingly important at short wavelengths and significantly reduce the small-signal gain per pass. In one-dimensional approximation, analytical expressions are obtained and numerical calculations are made to estimate the beam and undulator parameters necessary for lasing in the vacuum ultraviolet.

DOI10.1103/PhysRevE.52.986
PID

498630580a3a999c643953207e6a326b

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