title: Numerical characterization of high harmonic attosecond pulses.
abstract: A numerical simulation of attosecond harmonic pulse generation in a three-dimensional field-ionizing gas is presented. Calculated harmonic efficiencies quantitatively reproduce experimental findings. This allows a quantitative characterization of attosecond pulse generation revealing information currently not accessible by experiment. The rapid phase variation and spatiotemporal distortions of harmonics are smaller than anticipated, allowing focusing of 30-nm, 750-as pulses to intensities in excess of 10(13) W/cm(2). Feasibility of such pulses brings novel applications such as extreme ultraviolet nonlinear optics and attosecond pump probe spectroscopy within reach.
authors.affiliation: Institut für Photonik, Technische Universität Wien, Gusshausstrasse 27/387, A-1040 Vienna, Austria.
authors.forename: Nenad
authors.initials: N
authors.lastname: Milosevic
authors.forename: Armin
authors.initials: A
authors.lastname: Scrinzi
authors.forename: Thomas
authors.initials: T
authors.lastname: Brabec