title: Attosecond strobing of two-surface population dynamics in dissociating H2+.
abstract: Using H2+ and D2+, we observe two-surface population dynamics by measuring the kinetic energy of the correlated ions that are created when H2+ (D2+) ionize in short (40-140 fs) and intense (10(14) W/cm2) infrared laser pulses. Experimentally, we find a modulation of the kinetic energy spectrum of the correlated fragments. The spectral progression arises from a hitherto unexpected spatial modulation on the excited state population, revealed by Coulomb explosion. By solving the two-level time-dependent Schrödinger equation, we show that an interference between the net-two-photon and the one-photon transition creates localized electrons which subsequently ionize.
authors.affiliation: Institut für Kernphysik, J.W. Goethe Universität, D-60486 Frankfurt/Main, Germany. andre.staudte@nrc.ca
authors.forename: A
authors.initials: A
authors.lastname: Staudte
authors.forename: D
authors.initials: D
authors.lastname: Pavicić
authors.forename: S
authors.initials: S
authors.lastname: Chelkowski
authors.forename: D
authors.initials: D
authors.lastname: Zeidler
authors.forename: M
authors.initials: M
authors.lastname: Meckel
authors.forename: H
authors.initials: H
authors.lastname: Niikura
authors.forename: M
authors.initials: M
authors.lastname: Schöffler
authors.forename: S
authors.initials: S
authors.lastname: Schössler
authors.forename: B
authors.initials: B
authors.lastname: Ulrich
authors.forename: P P
authors.initials: PP
authors.lastname: Rajeev
authors.forename: Th
authors.initials: T
authors.lastname: Weber
authors.forename: T
authors.initials: T
authors.lastname: Jahnke
authors.forename: D M
authors.initials: DM
authors.lastname: Villeneuve
authors.forename: A D
authors.initials: AD
authors.lastname: Bandrauk
authors.forename: C L
authors.initials: CL
authors.lastname: Cocke
authors.forename: P B
authors.initials: PB
authors.lastname: Corkum
authors.forename: R
authors.initials: R
authors.lastname: Dörner