SPECTRUM, TEMPORAL STRUCTURE, AND FLUCTUATIONS IN A HIGH-GAIN FREE-ELECTRON LASER STARTING FROM NOISE

Authors
BONIFACIO R DESALVO L PIERINI P PIOVELLA N PELLEGRINI C
Citation
R. Bonifacio et al., SPECTRUM, TEMPORAL STRUCTURE, AND FLUCTUATIONS IN A HIGH-GAIN FREE-ELECTRON LASER STARTING FROM NOISE, Physical review letters, 73(1), 1994, pp. 70-73
Citations number
14
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
73
Issue
1
Year of publication
1994
Pages
70 - 73
Database
ISI
SICI code
0031-9007(1994)73:1<70:STSAFI>2.0.ZU;2-V
Abstract
We study the time structure, the frequency composition, and the shot t o shot fluctuations of the radiation emitted by a free-electron laser starting from shot noise in the electron beam longitudinal distributio n, taking into account slippage and finite bunch length effects. We fi nd a very different behavior when the bunch length, l(b), is much long er than the cooperation length, l(c), or of the order of a few l(c). T he field evolution is dominated by slippage effects in both cases, and shows the presence of superradiant spikes.