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 …

Intersystem crossing (ISC), formally forbidden within nonrelativistic quantum theory, is the
mechanism by which a molecule changes its spin state. It plays an important role in the …

Recently, carbon‐based metal‐free electrocatalysts (C‐MFECs) have drawn considerable
research attention because of their attractive physicochemical characteristics, cost …

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 …

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 motion of electrons in the microcosm occurs on a time scale set by the atomic unit of
time—24 attoseconds. Attosecond pulses at photon energies corresponding to the …

Since the first demonstration of the generation of attosecond pulses (1 as= 10− 18 s) in the
extreme-ultraviolet spectral region, several measurement techniques have been introduced …

Conical intersections allow electronically excited molecules to return to their electronic
ground state. Here, we observe the fastest electronic relaxation dynamics measured to date …

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 …

Proton transfer is one of the most fundamental events in aqueous-phase chemistry and an
emblematic case of coupled ultrafast electronic and structural dynamics,. Disentangling …