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Título : Attosecond control in photoionization of hydrogen molecules
Autor : Pérez Torres, Jhon Fredy
Siu, W.
Kelkensberg, F.
Morales, Felipe
Gademann, G.
Rouzée, A.
Johnsson, P.
Lucchini, M.
Calegary, F.
Sanz Vicario, José Luis
Martín García, Fernando
Vrakking, Marc. J. J.
metadata.dc.subject.*: Attosegundo
Fotoionización
Hidrógeneno
Moléculas
Fecha de publicación : 2011
Editorial : The American Physical Society
Citación : Kelkensberg, F., Siu, W., Pérez Torres, J. F., Morales, F., Gademann, G., Rouzée, A., ... Vrakking, M. J. J. (2001). Attosecond control in photoionization of hydrogen molecules. Physical Review Letters. 107(043002), 1-4. DOI: 10.1103/PhysRevLett.107.043002
Resumen : ABSTRACT: We report experiments where hydrogen molecules were dissociatively ionized by an attosecond pulse train in the presence of a near-infrared field. Fragment ion yields from distinguishable ionization channels oscillate with a period that is half the optical cycle of the IR field. For molecules aligned parallel to the laser polarization axis, the oscillations are reproduced in two-electron quantum simulations, and can be explained in terms of an interference between ionization pathways that involve different harmonic orders and a laser-induced coupling between the 1s g and 2p u states of the molecular ion. This leads to a situation where the ionization probability is sensitive to the instantaneous polarization of the molecule by the IR electric field and demonstrates that we have probed the IR-induced electron dynamics with attosecond pulses.
metadata.dc.identifier.eissn: 1079-7114
ISSN : 0031-9007
metadata.dc.identifier.doi: 10.1103/PhysRevLett.107.043002
Aparece en las colecciones: CIEN (Centro de Investigaciones en Ciencias Exactas y Naturales)

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