Atomic inner-shell radiation seeded free-electron lasers

Han Zhang, Kai Li, Jiawei Yan, Haixiao Deng, Baoyuan Sun
2018 Physical Review Accelerators and Beams  
In order to effectively improve the output quality of X-ray free electron laser (XFEL), we theoretically propose an XFEL scheme seeded by atomic inner-shell laser. As well known, an atomic inner-shell laser based on neutral atoms and pumped by an XFEL has been experimentally demonstrated, which produced sub-femtosecond X-ray pulses with increased temporal coherence. It shows that, by using the inner-shell laser as a seed to modulate the electron bunch, very stable and almost fully-coherent
more » ... fully-coherent short-wavelength XFEL pulses can be generated. The proposed scheme holds promising prospects in X-ray wavelengths, and even shorter.
doi:10.1103/physrevaccelbeams.21.070701 fatcat:d4szu3objrdfdmotqnvutfyz7e