Optimal designing of polychromatic field for maximum dissociation of LiH molecule

We present a strategy for enhancing the dissociation probability of a diatomic molecule, namely LiH, by designing optimal laser pulse. Dissociation dynamics is followed by solving time-dependent Schrodinger equation using time-dependent Fourier Grid Hamiltonian technique with optimal laser pulse function, generated by using the stochastic optimization technique of simulated annealing. We show that as we increase number of variable parameters while designing the optimal time dependent perturbation, higher dissociation is obtained. The step-wise increase in dissociation probability with the increase in complexity of designed pulse is clearly shown.