title: Quantum-phase resolved mapping of ground-state vibrational D2 wave packets via selective depletion in intense laser pulses.
abstract: Applying 7 fs pump-probe pulses (780 nm, 4 x 10(14) W/cm2) we observe electronic ground-state vibrational wave packets in neutral D2 with a period of T=11.101(70) fs by following the internuclear separation (R-)dependent ionization with a sensitivity of Delta<R><or=0.02 A. The absolute phase of the wave packet's motion provides evidence for R-dependent depletion of the ground state by nonlinear ionization, to be the dominant preparation mechanism. A phase shift of about pi found between pure ionization (D2+) and dissociation (D+ + D) channels opens a pathway of quantum control.
authors.affiliation: Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany.
authors.forename: Th
authors.initials: T
authors.lastname: Ergler
authors.forename: B
authors.initials: B
authors.lastname: Feuerstein
authors.forename: A
authors.initials: A
authors.lastname: Rudenko
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