Generation of ultra-large-bandwidth X-ray free-electron-laser pulses with a transverse-gradient undulator

A new and simple method to generate X-ray free-electron-laser radiation with unprecedented spectral bandwidth above the 10% level is presented. The broad bandwidth is achieved by sending a transversely tilted beam through a transverse-gradient undulator. The extent of the bandwidth can easily be controlled by variation of the beam tilt or the undulator gradient. Numerical simulations confirm the validity and feasibility of this method.

Source: Journal of Synchrotron Radiation - May 12, 2016 Category: Physics Authors: Prat, E.Calvi, M.Reiche, S. Tags: free-electron laser ultra-large-bandwith X-ray pulses transverse-gradient undulator simulations research papers Source Type: research