Quantum control of a molecular system in an intense field via the selective population of dressed states

Abstract

We theoretically investigate the physical mechanism of quantum control on a K₂ molecule with an ultrafast strong laser pulse by solving the time-dependent Schrödinger equation exactly using a wave packet approach. The structures of the triple splitting in the 3-photon ionization spectra of a K₂ molecule are presented to analyze the information of a selective population of dressed states. In this work, it is found that the tunability of the dressed states energies is achieved by regulating the laser intensity and the high selectivity of the dressed state population is attained by altering the envelope and wavelength of the intense laser pulse.