Title: Optimization of the femtosecond laser impulse for excitation and the Spin-Orbit mediated dissociation in the NaRb Dimer
Authors: J Kozicki, P Jasik, T Kilich, JE Sienkiewicz
DOI: https://doi.org/10.1016/j.jqsrt.2023.108644
Date: 05/02/2023
Working Group: WG1, WG2, WG5
Grant Period: 2
Grant Period Goal (number): GAPG-3, GAPG-4, GAPG-7
Covered deliverables from the MoU (number): 1.1.2, 2.4.1
Countries involved: Poland
Number of female/young/ITC coauthors: 0/1/0
Abstract: 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 dissociation in the NaRb dimer. In this process, the dimer is excited from the ground triplet state 1tSigma+ to the 1tPi state using the femtosecond laser impulse and the spin-orbit coupling between the 1tPi and 2sSigma+ 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 population oscillations allows us to determine the optimal time delay for dumping the molecule to its absolute ground state.
