LAUSR

ABSTRACT We theoretically study quantum interference phenomena in the photofragmentation reaction of breaking up the diatomic molecular ion D+ 2 into an atom D and an ionic D+ by a single ultrashort laser pulse. The numerical results show that the occurrence of quantum interference in kinetic energy release spectra is sensitive to the angle between the molecular axis and the laser field polarisation direction. Such sensitivity is shown to be dependent on the initial vibrational quantum state of the system and the pulse intensity. The underlying mechanism for the single-pulse-induced quantum interference is analysed by using a light-induced potential and light-induced conical intersection concept.