E. Cormier et P. Lambropoulos, EFFECT OF THE INITIAL PHASE OF THE FIELD IN IONIZATION BY ULTRASHORT LASER-PULSES, EUROPEAN PHYSICAL JOURNAL D, 2(1), 1998, pp. 15-20
We report on observable new features related to ionization of atoms by
laser pulses of only few cycles and some intensity. We show that for
particular photo-electron energies, the angular distribution becomes a
symmetric and that this asymmetry is related to the initial phase of t
he field.