One parameter fs-pulse form control on NaK and Na2K

Abstract

One parameter control experiments are carried out on two simple model systems with different complexities, the dimer NaK and the trimer Na₂K. The influence of the most important pulse features in formally found optimal control results are investigated independently for both molecules: the chirp and the separation of subpulses in pulse trains. For both molecules, the photoinduced processes under control are the transient three photon ionizations. Studies are presented that reveal the dependence of the measured ion yield on the applied chirps and the pulse separations. The pulse trains consisting of several subpulses are created by applying a sinusoidal spectral phase modulation. These studies may as well aid the interpretation of generated complex pulse shapes obtained in optimal control experiments.