Field-dependent franck-condon factors for the lonization of molecular hydrogen and deuterium

We have calculated Franck-Condon factors for molecular hydrogen and deuterium perturbed by intense low-frequency laser radiation. It is shown that maximum values of these factors correspond to higher excitation energies at the increasing of the laser intensity. Our results reduce to well-known values [1] in the limit of a weak laser field. Effective dipole laser-molecular ion interaction is derived analytically. This interaction produces dynamic chaos in the dissociation process of molecular ions H₂⁺ and D₂⁺.