The vibrational population transfer in two-state model
Taking LiH polar diatomic molecule for instance,the dynamical process of population transfer in the two-state model,from the ground electronic state X1∑+to the excited electronic state A1∑+through transition dipole moment,is studied theoretically.The time-dependent quantum wavepacket method is used to solve two coupled Schrödinger equation numerically.The population transfers of ground and excited electronic states through the interaction of laser pulse and molecular permanent dipole moments are also considered.These popu-lation transfer processes are realized using short linearly polarized laser pulses in the ultraviolet(UV)and infra-red(IR)regions.By selecting the peak intensity,central frequency,duration of laser pulses,etc,the final population transfer probability is more than 90％after the laser pulse is turned off.
Population transferTwo-state modelTime-dependent quantum wavepacket
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