Laser parameter influence on quantum path selection in a bichromatic field

摘要

We theoretically investigate the laser parameter influence on quantum path selection in a two-colour laser pulse, of which both fundamental field and its controlling field are linearly polarized. The laser's parameters, namely, the relative intensity of the controlling field and its relative phase with respect to the fundamental field, determine the quantum path selection by affecting their ionization probabilities. In both cases of the omega + 3 omega and omega + 2 omega laser fields, it is shown that the quantum path selection in the multi-cycle pulse is more dependent on the parameters than that in the few-cycle pulse, and the selection of the quantum path in the multi-cycle omega + 3 omega pulse shows stability to the phase and intensity variation. Our results are very beneficial to choosing appropriate parameters for quantum path selection in experiments.