Role of the Gouy phase in the coherent phase control of the photoionization and photodissociation of vinyl chloride
journal contributionposted on 14.04.2008, 00:00 by Vishal J. Barge, Zhan Hu, Joyce Willig, Robert J Gordon
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.