Title :
An upper limit to the gain-energy acceptance product of the free electron laser
Author :
Grover, Lov K. ; Pantell, Richard H.
Author_Institution :
AT&T Bell Labs., Murray Hill, NJ, USA
fDate :
6/1/1986 12:00:00 AM
Abstract :
We show that the gain-energy acceptance product of the uniform wiggler FEL is a maximum with respect to variations in phase shift or dispersion along the length, and any additional phase shift or dispersion cannot increase this product. For example, in the case of an optical klystron, the gain is increased by introducing a dispersive section, but the gain-energy acceptance product falls to less than that of the uniform wiggler FEL.
Keywords :
Free electron lasers; Dispersion; Electromagnetic scattering; Electron beams; Electron optics; Feedback amplifiers; Free electron lasers; Klystrons; Optical feedback; Stimulated emission; Undulators;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.1986.1073059
