We theoretically investigate the detachment of silver anions by a few-cycle linearly polarized laser pulse. The results show that the angular distributions of photoelectron obtained by the strong-field approximation model are in good agreement with the recent experimental result. The photoelectron angular distributions are not dependent of the volume effect of a focused laser beam. More interestingly, based on the saddle-point method, the interference patterns in the photodetachment from silver anions are clearly clarified in detail.
We study the momentum spectrum of the photoelectrons detached from H- ions in a linearly polarized few-cycle laser pulse. Based on the SP method, the interference effect of coherent quantum wave packets in the classical propagation step of detachment processes are analyzed, respectively.
The photodetachment of electron from F- ions by a short linearly polarized laser pulse is investigated. It is found that our result from summation over different values of m = 0,±1 is closer agreement with the most recent results from saddlepoint (SP) method and R matrix with time dependence (RMT) method.