Title :
Wavelength and emittance requirements in free-electron lasers
Author :
Roberson, C.W. ; Hafizi, B.
Author_Institution :
US Office of Naval Res., Arlington, VA, USA
fDate :
12/1/1991 12:00:00 AM
Abstract :
Improvements in electron beam quality are required for operation of free-electron lasers (FELs) at short wavelengths and low voltages. The authors investigated this scaling for a FEL amplifier in the exponential regime of operation wherein the optical beam is tied to the electron beam as a result of gain focusing, subject to the requirements of (1) good geometrical overlap between the radiation beam and the matched electron beam and (2) cold-electron-beam interaction. The scaling is given by simple analytical formulas
Keywords :
focusing; free electron lasers; laser theory; FEL amplifier; cold-electron-beam interaction; electron beam quality; emittance requirements; exponential regime; free-electron lasers; gain focusing; geometrical overlap; low voltages; optical beam; radiation beam; short wavelengths; Electron beams; Electron optics; Equations; Free electron lasers; Laser beams; Low voltage; Optical amplifiers; Optical beams; Undulators; Wavelength measurement;
Journal_Title :
Quantum Electronics, IEEE Journal of
