Time-dependent method in the laser-atom interactions

被引:2
|
作者
Tong, Xiao-Min [1 ,2 ]
Toshima, Nobuyuki [1 ]
机构
[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan
[2] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3068577, Japan
基金
日本学术振兴会;
关键词
Time-propagator; Intense laser; Infrared laser assisted photoionization; HARMONIC-GENERATION; IONIZATION; FIELDS;
D O I
10.1016/j.cpc.2010.06.022
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
We introduce a recent developed time-dependent method used in the study of laser-atom interactions The key ingredients of the method are that (1) we propagate the wave function in real space in a finite region The region is split Into two parts an inner-region and an outer-region Once the electron moved into the outer-region the wave function is projected into momentum space and propagated analytically to avoid the reflection from the boundary (2) To Increase the numerical accuracy and make the physical processes more transparent we solve the time-integral Schrodinger equation instead of time-differential equation Then we apply the method to study the infrared laser assisted photoionization of helium by a coherent extreme-ultraviolet light The ionization process can be controlled by tuning the time delay between the two pulses (C) 2010 Elsevier BV All rights reserved
引用
收藏
页码:21 / 23
页数:3
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