用伪谱方法计算强激光场中一维原子的阈上电离谱  

Calculations of Above-threshold ionization electron spectrum of One-dimensional atom in the intense laser field with pseudospectral method

作　　者：赵松峰[1] 周效信[1] 李鹏程[1] 王国利[1] 

机构地区：[1]西北师范大学物理与电子工程学院,甘肃兰州730070

出　　处：《原子与分子物理学报》2004年第2期304-308,共5页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(10274063);教育部科技研究重点项目(03126);波谱与原子分子物理国家重点实验室(T152111)资助课题。

摘　　要：引入非线性空间变换,用伪谱方法求解了一维原子在强激光场中的薛定谔方程,再利用B样条函数和傅立叶级数的线性组合构造原子未微扰的本征函数,计算了一维原子在强激光场中的阈上电离谱,其结果与分裂算符法得到的结果符合得很好。Solving time-dependent Shrdinger equation of one-dimensional atom in intense laser fields with pseudospectral method by introducing the nonlinear space transformation and the eigen functions which are constructed from the linear combination of the B-spline functions and the truncated Fourier series, We calculate above-threshold ionization electron spectrum of one-dimensional atom in intense laser fields. Our results are in very good agreement with those of split-operator method.

关 键 词：伪谱方法 强激光场 阈上电离谱 

分 类 号：O562.4[理学—原子与分子物理]