Advances in attosecond science have led to a wealth of important discoveries in atomic,
molecular, and solid-state physics and are progressively directing their footsteps toward …

We describe the recent emergence of attosecond science, assessing the present state of the
art and discussing several recent examples where attosecond electron dynamics has been …

We demonstrate the generation of a coherent water window x ray by extending the plateau
region of high-order harmonics under a neutral-medium condition. The maximum harmonic …

Ultrafast-dynamics studies and femtosecond-pulse metrology both rely on the nonlinear
processes induced solely by an incident light pulse. Extending these approaches to the …

We propose and demonstrate the generation of a continuum high-order harmonic spectrum
by mixing multicycle two-color (TC) laser fields with the aim of obtaining an intense isolated …

Nonadiabatic transitions are one of the most important quantum mechanical phenomena in
chemical reaction dynamics. This is because the most interesting chemical and even …

High harmonic generation (HHG) from gas-phase atoms (or molecules) has opened up a
new frontier in ultrafast optics, where attosecond time resolution and angstrom spatial …

Laser-driven coherent extreme-ultraviolet (XUV) sources provide pulses lasting a few
hundred attoseconds,, enabling real-time access to dynamic changes of the electronic …

The long-standing scientific quest of real-time tracing electronic motion and dynamics in all
states of matter has been remarkably benefited by the development of intense laser-based …

In this review, we will focus on the theoretical aspects in observing and controlling the
electronic dynamics in few-electron atoms and molecules by attosecond pulses in different …