Structures in molecular photofragment and photoelectron distributions from two-photon non-resonant excitation

We regard molecular two-photon electronic transitions induced by the interaction of two pulses with different frequencies and temporal widths. Whereas one pulse is tuned off resonance between two vibrational levels in an intermediate electronic state the second one induces a transition to a dissociative or ionic electronic state. It is shown that in both case the non-resonant excitation induces structures in the final state distributions which are not present for resonant excitation.