title: Role of the gouy phase in the coherent phase control of the photoionization and photodissociation of vinyl chloride.
abstract: We demonstrate theoretically and experimentally that the Gouy phase of a focused laser beam may be used to control the photoinduced reactions of a polyatomic molecule. Quantum mechanical interference between one- and three-photon excitation of vinyl chloride produces a small phase lag between the dissociation and ionization channels on the axis of the molecular beam. Away from the axis, the Gouy phase introduces a much larger phase lag that agrees quantitatively with theory without any adjustable parameters.
authors.affiliation: Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60680-7061, USA.
authors.forename: Vishal J
authors.initials: VJ
authors.lastname: Barge
authors.forename: Zhan
authors.initials: Z
authors.lastname: Hu
authors.forename: Joyce
authors.initials: J
authors.lastname: Willig
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Gordon