title: Spatiotemporal imaging of ultrafast molecular motion: collapse and revival of the D+2 nuclear wave packet.
abstract: We report on a real-time imaging of the ultrafast D(+)2 rovibrational nuclear wave-packet motion performed using a combination of a pump-probe setup with 7 fs laser pulses and a "reaction-microscope" spectrometer. We observe fast dephasing (collapse) of the vibrational wave packet and its subsequent revival and prove rotational excitation in ultrashort laser pulses. Channel-selective Fourier analysis of the wave packet's long-term (approximately 3000 fs) evolution allows us to resolve its individual constituents, revealing unique information on the mechanisms of strong-field ionization and dissociation.
authors.affiliation: Max-Planck-Institut für Kernphysik, D-69029 Heidelberg, Germany.
authors.forename: Th
authors.initials: T
authors.lastname: Ergler
authors.forename: A
authors.initials: A
authors.lastname: Rudenko
authors.forename: B
authors.initials: B
authors.lastname: Feuerstein
authors.forename: K
authors.initials: K
authors.lastname: Zrost
authors.forename: C D
authors.initials: CD
authors.lastname: Schröter
authors.forename: R
authors.initials: R
authors.lastname: Moshammer
authors.forename: J
authors.initials: J
authors.lastname: Ullrich