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

Over the past few decades, coherent broadband spectroscopy has been widely used to
improve our understanding of ultrafast processes (eg, photoinduced electron transfer, proton …

The transport of excitation energy in molecular aggregates is of crucial importance for the
function of organic optoelectronic devices and next‐generation solar cells. First, this review …

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 …

We review the tremendous advances in ultrafast X-ray science, over the past 15 years,
making the best use of new ultrashort X-ray sources including table-top or large-scale …

The transfer of charge at the molecular level plays a fundamental role in many areas of
chemistry, physics, biology and materials science. Today, more than 60 years after the …

Two-dimensional electronic spectroscopy (2DES) reveals connections between an optical
excitation at a given frequency and the signals it creates over a wide range of frequencies …

Although supercontinuum sources are readily available for the visible and near infrared (IR),
and recently also for the mid-IR, many areas of biology, chemistry, and physics would benefit …

Conspectus The properties of transition metal complexes are interesting not only for their
potential applications in solar energy conversion, OLEDs, molecular electronics, biology …

Crossings of electronic potential energy surfaces in nuclear configuration space, known as
conical intersections, determine the rates and outcomes of a large class of photochemical …