Journal of Physics B Atomic Molecular and Optical Physics
Simple calculations on two-colour multiphoton ionization
A. Szöke, K. C. Kulander, J. N. Bardsley
Abstract
Calculations are performed, using a one-dimensional short-range potential and a simple model of the helium atom, of multiphoton ionization due to the coherent superposition of a laser beam with one of its higher-order harmonics. Variation of the relative phase leads to the enhancement or suppression of ionization and to large asymmetries in the photoelectron angular distribution.