We simulate the time-dependent Schrödinger equation and observe the rescattering dissociation of ${\mathrm{H}}_2$ in strong infrared laser fields. Two dissociation pathways are identified, i.e., the dissociation of ${\mathrm{H}}_2{}^{+}$ in the $2p{\sigma }_u$ state and the dissociation of ${\mathrm{H}}_2$ in doubly excited states. The former accounts for larger proportions as the rescattering energy is larger. The kinetic energy release of dissociative fragments reflects the temporal internuclear distance at the moment the rescattering happens.

• Received 25 July 2014

DOI:https://doi.org/10.1103/PhysRevA.90.053423