Selective vibrational population transfer between electronic states of the Na2 molecule with ultrashort laser pulses

Steering population transfer between electronic states of the Na2molecule beyond the rotating wave approximation

“…Because the population is initially distributed around the equilibrium of state Xñ | and the interaction time of the femtosecond laser is relatively short, the transition is then considered to mainly occur around R 0 . The same definition has been used in previous calculations of this system or others (see, e.g., [34,35,37]). In this work, we consider the twophoton resonant transition, i.e., 0 D = , and 1 2 D = -D .…”

“…By using a counterintuitive sequence of light pulses, the population has been transferred from the lowest vibrational level of the ground electronic state (X 1 g S + ) to the lowest vibrational level of the second excited electronic state (2 1 g P ), with the first excited electronic state (A 1 u S + ) serving as an intermediate. Also based on this molecule, the APLIP scheme has been extended by introducing the chirped pulses [18], an addition electronic state (four-electronicpotential model) [19], and the femtosecond pulses [34,35].…”