中文摘要：

采用劈裂-伪谱方法求解激光场中的含时薛定谔方程，探讨飞秒激光脉冲中氢原子波包的演化过程．研究了氢原子激发态的径向分布，角向分布、各态布居和电子云密度随时间的变化关系．在用共振激光脉冲控制氢原子波包演化的过程中径向分布、角向分布、各态布居和电子云密度随时间发生变化，但发现径向分布和角向分布在变化的过程中始终经过一些特殊点，并从理论上分析了存在这些特殊点的原因．

英文摘要：

The pseudo-spectral split-operator method is used to solve the time-dependent Schrodinger equation （TDSE） in laser field in order to study the evolution of wavepacket in a hydrogen. Radial distribution function, angular distribution function, population of the n, p states and the electronic charge cloud density of hydrogen are of great concern to us . And we find that they have a closely dependence on time when controlling the wavepacket by a single pulse with a frequency in resonance with a ground state and a given n level. We also discover some particular points fixed in the Radial distribution function figure and the Angular distribution function figure. We extend analysis of existing of fixed point in theory.