Optimization of the femtosecond laser impulse for excitation and the Spin-Orbit me diate d dissociation in the NaRb Dimer

We study the dynamics of multiple coupled states under the influence of an arbitrary time-dependent external field to investigate the femtosecond laser-driven excitation and the spin-orbit mediated disso-ciation in the NaRb dimer. In this process, the dimer is excited from the ground triplet state 1 3 E+ to the 1 3 11 state using the femtosecond laser impulse and the spin-orbit coupling between the 1 3 11 and 2 1 E+ states results in the singlet-triplet transition. The laser impulse parameters are optimised to obtain maximum yield in electronic states correlating with the first excited atomic asymptote. We observe the detailed population statistics and power-law decay of these states. Finally, the analysis of the popula-tion oscillations allows us to determine the optimal time delay for dumping the molecule to its absolute ground state. (c) 2023 Elsevier Ltd. All rights reserved.