Quantum materials exhibit complex interactions between electron, structural and spin degrees-of-freedom over a wide range of length scales, leading to exotic phenomenon that are challenging to study. Ultrafast excitation can disentangle these degrees-of-freedom, but resolving the different length scales remains challenging. Here I will present recent results using X-ray free electron lasers to...
Despite tremendous progress in X-ray free-electron laser (XFEL) science over the last decade, future applications still demand fully coherent, stable X-rays that have not been demonstrated in existing X-ray FEL facilities. In this talk, we review the progress toward an X-ray regenerative amplifier FEL (XRAFEL) to produce both high-peak and high-average power FEL pulses with full temporal...
SwissFEL at the Paul Scherrer Institute is a free-electron laser facility providing hard and soft X-rays, based on the SASE principle. In addition, the soft X-ray beamline Athos is currently extended for electron beam manipulation with external lasers, aiming to provide seeding capabilities based on the two-stage echo-enabled
harmonic generation (EEHG) scheme. Completion of the installation...
We present the design study of an innovative scheme to generate high repetition rate
(multi-MHz-class) THz and X synchronized radiation pulses
by using an Energy Recovered Super Conducting Linac operating in Continuous Wave
mode driving a Free-Electron Laser Oscillator.
The FEL and X rays performances are illustrated for one and two color operation.
Start-to-end simulations are...
