We study numerically ionization from a model atom induced by a strong high-frequency field. Both one- and two-dimensional models are considered. We discuss the physics of ionization suppression in strong fields and point out the differences between one- and higher-dimensional models. We also discuss the applicability of classical modeling.

• Received 10 June 1991

DOI:https://doi.org/10.1103/PhysRevA.45.3203