Influence of laser fields on the vibrational population of molecules and its wave-packet dynamical investigation  

作　　者：王军 刘芳 岳大光 赵娟 许燕 孟庆田 Liu Wing-Ki 

机构地区：[1]College of Physics and Electronics,Shandong Normal University [2]Department of Physics and Astronomy,University of Waterloo

出　　处：《Chinese Physics B》2010年第12期193-202,共10页中国物理B（英文版）

基　　金：Project supported by the Natural Science Foundation of Shandong Province of China (Grant No. Y2006A23);the National Basic Research Program of China (Grant No. 2006CB806000);the Open Fund of the State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics)

摘　　要：The time-dependent wave packet method is used to investigate the influence of laser-fields on the vibrational population of molecules. For a two-state system in laser fields, the populations on different vibrational levels of the upper and lower electronic states are given by wavefunctions obtained by solving the Schrbdinger equation with the split- operator method. The calculation shows that the field parameters, such as intensity, wavelength, duration, and delay time etc. can have different influences on the vibrational population. By varying the laser parameters appropriately one can control the evolution of wave packet and so the vibrational population in each state, which will benefit the light manipulation of atomic and molecular processes.The time-dependent wave packet method is used to investigate the influence of laser-fields on the vibrational population of molecules. For a two-state system in laser fields, the populations on different vibrational levels of the upper and lower electronic states are given by wavefunctions obtained by solving the Schrbdinger equation with the split- operator method. The calculation shows that the field parameters, such as intensity, wavelength, duration, and delay time etc. can have different influences on the vibrational population. By varying the laser parameters appropriately one can control the evolution of wave packet and so the vibrational population in each state, which will benefit the light manipulation of atomic and molecular processes.

关 键 词：intense laser field time-dependent wave packet method light-matter interaction vibrational population 

分 类 号：O561.3[理学—原子与分子物理]