Linear accelerator-based free-electron lasers (FELs) are the leading source of fully coherent
X-rays with ultra-high peak powers and ultra-short pulse lengths. Current X-ray FEL facilities …

Free-electron lasers produce extremely brief, coherent, and bright laser-like photon pulses
that allow to image matter at atomic resolution and at timescales faster than the …

X-ray free-electron lasers (XFELs) and table-top sources of x-rays based upon high
harmonic generation (HHG) have revolutionized the field of ultrafast x-ray atomic and …

Ultrafast electron and X-ray imaging and spectroscopy are the basis for an ongoing
revolution in the understanding of dynamical atomic-scale processes in matter. The …

X-ray free-electron lasers (FELs), which amplify light emitted by a relativistic electron beam,
are extending nonlinear optical techniques to shorter wavelengths, adding element …

Generation of intense, fully coherent radiation with wide spectral coverage has been a long-
standing challenge for laser technologies. Several techniques have been developed in …

The Shanghai soft X-ray Free-Electron Laser facility (SXFEL), which is the first X-ray FEL
facility in China, is being constructed in two phases: the test facility (SXFEL-TF) and the user …

It is a long-standing challenge for laser technologies to generate intense fully coherent
pulses in the x-ray regime. Here, we demonstrate an external seeding mechanism, termed …

The spectroscopic techniques for time-resolved fine analysis of matter require coherent x-ray
radiation with femtosecond duration and high average brightness. Seeded free-electron …

The fourth generation of synchrotron radiation sources, commonly referred to as the Free
Electron Laser (FEL), provides an intense source of brilliant X-ray beams enabling the …