Free-electron lasers and high-harmonic-generation table-top systems are new sources of
extreme-ultraviolet to hard X-ray photons, providing ultrashort pulses that are intense …

Major advances in X-ray sources including the development of circularly polarized and
orbital angular momentum pulses make it possible to probe matter chirality at …

Intense attosecond X-ray pulses are key for ultrafast nonlinear spectroscopy and diffractive
imaging. Here we demonstrate the generation of terawatt-scale isolated attosecond pulses …

Pump–probe experiments with subfemtosecond resolution are the key to understanding
electronic dynamics in quantum systems. Here we demonstrate the generation and control …

Since 2001 and the first demonstrations of the feasibility of generating and measuring
attosecond light pulses, attosecond science has developed into a very active and quickly …

The concomitant motion of electrons and nuclei on the femtosecond time scale marks the
fate of chemical and biological processes. Here we demonstrate the ability to initiate and …

Multi-<? TeX 2pc 0pt?> electron<? TeX 4pc 0pt?> dynamics in atoms and molecules very
often occur on sub-to few-femtosecond time scales. The available intensities of extreme …

Over the last 20 years, XUV and X-ray free-electron lasers have enabled a wide variety of
time-resolved experiments that have dramatically advanced our understanding of ultrafast …

We report the measurement of impulsive stimulated x-ray Raman scattering in neutral liquid
water. An attosecond pulse drives the excitations of an electronic wavepacket in water …

We report the demonstration of optical compression of an electron beam and the production
of controllable trains of femtosecond, soft x-ray pulses with the Linac Coherent Light Source …