Dynamic Stark effect and the Coulomb-Volkov approximation

M. G. BUSTAMANTE; V. D. RODRÍGUEZ

JOURNAL OF PHYSICS: CONFERENCE SERIES

Institute of Physics

Año: 2009 vol. 194 p. 32030 - 32030

1742-6588

A modified Coulomb-Volkov theory is used to study the interaction of intense laser pulses with atomic Hydrogen. Photon energy greater than the ionization potential and non-perturbative conditions are considered. The dynamical Stark effect is accounted by introducing the initial state coupling to the remaining discrete and continuum atomic spectrum. Both the Stark shift and the decay of the initial state are studied. The ionization spectra, the Stark shift and the total ionization probability are compared with results obtained from numerical solution of the time dependent Schrödinger equation. Both results agree well.