G. Urbasch

TL;DR: A strong correlation is reported between the magnitude and the direction of the momentum of two electrons that are emitted from an argon atom, driven by a femtosecond laser pulse (at 38 TW cm-2).

TL;DR: The momentum distributions of singly and doubly charged helium ions created in the focus of 220 fs, 800 nm laser pulses at intensities of (2.9-6.6)x10(14) W/cm(2) are measured.

TL;DR: In this article, the ablation area of thin copper films on fused silica by picosecond laser pulses is characterized using optical and scanning electron microscopy, and the experimental ablation rate per pulse is compared to heat-flow calculations based on the two-temperature model for ultrafast laser heating.

TL;DR: In this paper, the difference between a sequential interaction of a femtosecond laser field with two electrons and a non-sequential process of double ionization mediated by electron-electron correlation was demonstrated by observing the momentum distribution of doubly charged argon ions created in the laser field.

TL;DR: A combined theoretical and experimental investigation is presented providing for the first time an understanding of the mechanism of H(3)(+) formation at the molecular level, with a surprising result that the transition state of the process can be formally regarded as a H( 2) molecule attached to a C(2)H(4)(2+) entity but IRC calculations show that it belongs to the reaction channel.