EXPERIMENTAL-EVIDENCE FOR HIGH-EFFICIENCY, LOW-BRIGHTNESS BEHAVIOR INFREE-ELECTRON LASERS

Authors
IRACANE D FONTENAY V GUIMBAL P JOLY S STRIBY S TOUATI D
Citation
D. Iracane et al., EXPERIMENTAL-EVIDENCE FOR HIGH-EFFICIENCY, LOW-BRIGHTNESS BEHAVIOR INFREE-ELECTRON LASERS, Physical review letters, 72(25), 1994, pp. 3985-3988
Citations number
9
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
72
Issue
25
Year of publication
1994
Pages
3985 - 3988
Database
ISI
SICI code
0031-9007(1994)72:25<3985:EFHLBI>2.0.ZU;2-G
Abstract
Spectral broadening is expected in free-electron lasers (FEL) due to s ideband generation and non-linear mode coupling. For high enough elect ron current, the FEL beam presents an asymptotic regime characterized by a broad and turbulent spectrum. Theoretical investigations have sho wn that this regime also exhibits a strong efficiency enhancement and a universal low brightness. This paper reports experimental evidence f or these new scaling laws using the rf linac-based ELSA FEL.