Coherent spontaneous emission and spontaneous phase locking in a free-electron laser

TitleCoherent spontaneous emission and spontaneous phase locking in a free-electron laser
Publication TypeJournal Article
Year of Publication1999
AuthorsH.H Weits, D. Oepts
JournalIeee Journal of Quantum Electronics
Volume35
Number1
Pagination15-26
Date PublishedJan
ISBN Number0018-9197
Abstract

We present measurements that demonstrate the existence of spontaneous coherence between independently generated laser pulses in the FELIX free-electron laser, The experiments show that the interpulse coherence is caused by a high level of coherently enhanced spontaneous emission. We have been able to manipulate the level of interpulse coherence by changing the settings of the electron accelerating system. The shape of the electron bunches critically determines the amount of coherent emission. Results of simulations of the acceleration process are used to discuss the influence of the accelerator parameters on the electron bunch shape. The experimentally determined correlation function of the laser pulses is reproduced by a simple pulse-evolution model. Thereby, an estimate of the timing jitter of the RF accelerating system is obtained.

DOI10.1109/3.737614
PID

3b2bd2caae8476cbe032932e171fa222

Go back one page.