THEORY OF SHORT-PULSE FEL OSCILLATORS

Authors
PIOVELLA N CHAIX P SHVETS G JAROSZYNSKI D
Citation
N. Piovella et al., THEORY OF SHORT-PULSE FEL OSCILLATORS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 375(1-3), 1996, pp. 156-159
Citations number
16
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
375
Issue
1-3
Year of publication
1996
Pages
156 - 159
Database
ISI
SICI code
0168-9002(1996)375:1-3<156:TOSFO>2.0.ZU;2-#
Abstract
A simple model for the nonlinear low gain evolution of a short pulse C ompton free electron laser (FEL) oscillator is derived. An analysis of the small signal regime allows the calculation of the shape of the pr oduced optical pulse. For small excess over threshold, a Landau-Ginzbu rg equation is obtained, which allows us to show that a strong superra diant efficiency enhancement occurs at small detuning. Furthermore, th e knowledge of the eigenfrequencies in the small signal regime allows one to infer a scale law for the period of limit cycles occurring at l arger excess over threshold. Theoretical results are compared to exper imental results from FELIX.