Two-color X-ray free-electron laser consisting of broadband and narrowband beams.
Ichiro InoueTaito OsakaToru HaraMakina YabashiPublished in: Journal of synchrotron radiation (2020)
A simple scheme is proposed and experimentally confirmed to generate X-ray free-electron lasers (XFELs) consisting of broadband and narrowband beams with a controllable intensity ratio and a large photon-energy separation. This unique two-color XFEL beam will open new opportunities for investigation of nonlinear interactions between intense X-rays and matter.