用谱拟合法计算强激光场中氢原子的高次谐波谱  

A New Spectral Fitting Method and Its Application to High Order Harmonic Generation Spectra of Hydrogen in Intense Laser Field

作　　者：乔豪学[1] 李白文[1] 

机构地区：[1]中国科学院武汉物理与数学研究所核磁共振与原子分子物理国家重点实验室,湖北武汉430072

出　　处：《原子核物理评论》2002年第2期257-260,共4页Nuclear Physics Review

基　　金：国家自然科学基金资助项目资助项目~~

摘　　要：介绍了一种新的求解含时薛定谔方程的谱拟合法 .该方法把含时波函数在少量且分布稀疏的网格点上拟合 ,结合泰勒级数展开 ,用相对简单的计算得到包括Δt高次项贡献的含时波函数 .并将这一方法用于强激光场中氢原子高次谐波谱的计算 ,得到了与其它方法一致的结果 .A new spectral fitting method for solving the time-dependent Schrdinger equation has been developed and applied to the atom in intense laser fields. By using this method, the time-dependent wave functions are determined with few and far between discrete mesh points. And the high accuracy wave functions with contribution of high-order-term of Δt are obtained by using Taylor series expand method. Our method is proved by computing high order harmonic generation spectra of hydrogen in laser fields, and the results are in agreement with other calculations.

关 键 词：计算 强激光场 氢原子 高次谐波谱 谱拟合法 泰勒级数 

分 类 号：O562.3[理学—原子与分子物理]