The history and current status of the Keldysh theory of strong field ionization are reviewed.
The focus is on the fundamentals of the theory, its most important applications and those …

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 …

Strong-field physics is currently experiencing a shift towards the use of mid-IR driving
wavelengths. This is because they permit conducting experiments unambiguously in the …

High-harmonic generation driven by two-color counter-rotating circularly polarized laser
fields was recently demonstrated experimentally as a breakthrough source of bright …

A theory of above-threshold ionization of atoms by a strong laser field is formulated. Two
versions of the strong-field approximation (SFA) are considered, the direct SFA and the …

A review is presented of the rescattering plateau in laser-induced above-threshold ionization
and its various features as they were discovered over time. Several theoretical explanations …

Under ideal conditions, quantum metrology promises a precision gain over classical
techniques scaling quadratically with the number of probe particles. At the same time, no-go …

Attoscience is the emerging field that accesses the fastest electronic processes occurring at
the atomic and molecular length scales with attosecond (1 as= 1 0− 18 s) time resolution …

The tunnelling model of ionization applies only to longitudinal fields: quasistatic electric
fields that do not propagate. Laser fields are transverse: plane wave fields that possess the …

The velocity map of the above-threshold ionization electron spectrum at long laser
wavelength exhibits a characteristic structure normal to the laser polarization, which has the …