Role of the gouy phase in the coherent phase control of the photoionization and photodissociation of vinyl chloride |
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Authors: | Barge Vishal J Hu Zhan Willig Joyce Gordon Robert J |
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Affiliation: | Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60680-7061, USA. |
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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. |
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