Above-threshold ionization in molecules by intense multiple-frequency circularly polarized laser pulses

We present molecular above-threshold ionization (ATI) by multiple-frequency circularly polarized laser pulses. Simulations are performed on aligned H-2(+) by numerically solving corresponding time-dependent Schrodinger equations. Molecular ATI spectra show maximum cutoff and multiple ionization trajectories which depend on the pulse frequency combination. We describe the laser-induced electron dynamics by multiple frequency circularly polarized pulses in a rotating frame where the total ponderomotive energy of electrons is defined by the average frequency of the pulses. The influence of Coriolis effects in the photoionization is also studied. The present results illustrate the dependence of molecular photoionization on the pulse frequency combination and helicity, thus allowing for the control of circular-polarization electron dynamics in the more complex molecular systems.