Research on isolated attosecond pulses (IAPs) based on high-order harmonic generation
changed substantially around 2010. Before then, the Ti: sapphire laser was the de facto …

Recent progress in high power ultrafast short-wave and mid-wave infrared lasers has
enabled gas-phase high harmonic generation (HHG) in the water window and beyond, as …

The quantum-mechanical motion of electrons in molecules and solids occurs on the sub-
femtosecond timescale. Consequently, the study of ultrafast electronic phenomena requires …

Ultrafast spectroscopy techniques use sequences of ultrashort light pulses (with femto-to
attosecond durations) to study photoinduced dynamical processes in atoms, molecules …

Attosecond metrology has so far largely remained limited to titanium: sapphire lasers
combined with an active stabilization of the carrier-envelope phase (CEP). These sources …

The past two decades have seen rapid developments in short-pulse X-ray sources, which
have enabled the study of nuclear and electronic dynamics by ultrafast X-ray spectroscopies …

Laser-driven high-harmonic generation provides the only demonstrated route to generating
stable, tabletop attosecond x-ray pulses but has low flux compared to other x-ray …

Attosecond science opened the door to observing nuclear and electronic dynamics in real
time and has begun to expand beyond its traditional grounds. Among several spectroscopic …

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 …

The time–energy information of ultrashort X-ray free-electron laser pulses generated by the
Linac Coherent Light Source is measured with attosecond resolution via angular streaking …