title: High harmonic spectroscopy of multichannel dynamics in strong-field ionization.
abstract: We perform high harmonic generation spectroscopy of aligned nitrogen molecules to characterize the attosecond dynamics of multielectron rearrangement during strong-field ionization. We use the spectrum and ellipticity of the harmonic light to reconstruct the relative phase between different ionization continua participating in the ionization, and thus determine the shape and location of the hole left in the molecule by strong-field ionization. Our interferometric technique uses transitions between the ionic states, induced by the laser field on the subcycle time scale.
authors.affiliation: CELIA, Université Bordeaux 1, UMR5107 (CNRS, Bordeaux 1, CEA), 351 Cours de la Libération, 33405 Talence, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Mairesse
authors.forename: J
authors.initials: J
authors.lastname: Higuet
authors.forename: N
authors.initials: N
authors.lastname: Dudovich
authors.forename: D
authors.initials: D
authors.lastname: Shafir
authors.forename: B
authors.initials: B
authors.lastname: Fabre
authors.forename: E
authors.initials: E
authors.lastname: Mével
authors.forename: E
authors.initials: E
authors.lastname: Constant
authors.forename: S
authors.initials: S
authors.lastname: Patchkovskii
authors.forename: Z
authors.initials: Z
authors.lastname: Walters
authors.forename: M Yu
authors.initials: MY
authors.lastname: Ivanov
authors.forename: O
authors.initials: O
authors.lastname: Smirnova