We present the first lasing results of SwissFEL, a hard X-ray free-electron laser (FEL) that
recently came into operation at the Paul Scherrer Institute in Switzerland. SwissFEL is a very …

The Shanghai High repetition rate XFEL and Extreme light facility (SHINE) is under
construction and aims at generating X-rays between 0.4 and 25 keV with three FEL …

X-ray free-electron lasers (XFELs), with pulse durations of a few tens of femtoseconds or
shorter, are cutting-edge instruments capable of observing structure and dynamics at the …

We report on the generation of one-and two-color attosecond hard x-ray pulses at SwissFEL
by appropriately tailoring the nonlinear compression of the electron beam. For achieving …

We demonstrate the generation of widely tunable two-color x-ray free-electron laser (FEL)
pulses at SwissFEL. In a split-undulator configuration, each color is produced in a different …

We have produced hard x-ray free-electron laser (FEL) pulses, which are chirped both in
photon energy and in spatial position. The experiments have been carried out at the hard x …

To optimize the intensity of X-ray free-electron lasers (XFELs), phase shifters, oriented in
phase with the phases of the XFEL pulse and electron beam, are typically installed at …

X-ray free-electron lasers (FELs) deliver ultrabright X-ray pulses, but not the sequences of
phase-coherent pulses required for time-domain interferometry and control of quantum …

FLASH is the first soft X-ray FEL user facility, routinely providing brilliant photon beams for
users since 2005. The second undulator branch of this facility, FLASH2, is gap-tunable …

Several beam manipulation methods have been studied and experimentally demonstrated
to generate x-ray multipulses in free-electron-laser (FEL) facilities, advancing the fields of …