title: Collinear generation of ultrashort UV and XUV pulses.
abstract: We demonstrate the collinear generation of few-femtosecond ultraviolet and attosecond extreme ultraviolet pulses via a combination of third-harmonic and high harmonic generation in noble gases. The ultrashort coherent light bursts are produced by focusing a sub-1.5-cycle near-infrared/visible laser pulse in two subsequent quasi-static noble gas targets. This approach provides an inherently synchronized pair of UV and XUV pulses, where the UV radiation has a photon energy of approximately 5 eV and a pulse energy of up to 1 microJ and the XUV radiation contains up to 3.5 10(6) XUV photons per shot with a photon energy exceeding 100 eV. This source represents a novel tool for future UV pump/XUV probe experiments with unprecedented time-resolution.
authors.affiliation: Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany.
authors.forename: E M
authors.initials: EM
authors.lastname: Bothschafter
authors.forename: A
authors.initials: A
authors.lastname: Schiffrin
authors.forename: V S
authors.initials: VS
authors.lastname: Yakovlev
authors.forename: A M
authors.initials: AM
authors.lastname: Azzeer
authors.forename: F
authors.initials: F
authors.lastname: Krausz
authors.forename: R
authors.initials: R
authors.lastname: Ernstorfer
authors.forename: R
authors.initials: R
authors.lastname: Kienberger