Ultrashort laser pulses are unique tools to trigger and probe the fastest charge dynamics in
matter, allowing the investigation of fundamental physical phenomena with unprecedented …

We generate angularly isolated beams of circularly polarized extreme ultraviolet light
through the first implementation of non-collinear high harmonic generation with circularly …

In this review, we report on recent progress in the generation and application of
multichromatic polarization-tailored pulse sequences for the coherent control of multiphoton …

High harmonics driven by two-color counterrotating circularly polarized laser fields are a
unique source of bright, circularly polarized, extreme ultraviolet, and soft x-ray beams, where …

As a fundamental property of the electron, the spin plays a decisive role in the electronic
structure of matter, from solids to molecules and atoms, for example, by causing magnetism …

Atoms undergoing strong-field ionization in two-color circularly polarized femtosecond laser
fields exhibit unique two-dimensional photoelectron trajectories and can emit bright …

Bright, circularly polarized, extreme ultraviolet (EUV) and soft x-ray high-harmonic beams
can now be produced using counter-rotating circularly polarized driving laser fields …

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 …

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

We report on nonsequential double ionization of Ar by a laser pulse consisting of two
counterrotating circularly polarized fields (390 and 780 nm). The double-ionization …