Research Papers in Physics and Astronomy


Date of this Version



Published in Journal of Physics B: Atomic, Molecular and Optical Physics 34 (2001), pp. L579–L586. Copyright © 2001 Institute of Physics Publishing Ltd. Used by permission.


Based upon the exact numerical solution of the complex quasienergy problem for a 3-dimensional short-range potential as well as upon analytical evaluations, we demonstrate for any finite frequency ω that the action of an ultra-intense laser field (with electric vector F(ωt)) on a weakly bound atomic system may be described by the cycle-averaging of results for an instantaneous static electric field of strength |F(ωt)|.

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