脉冲形状和静电场对电离率和高次谐波的影响  

The effects of pulse-shape and static electric field on ionization and high-order harmonic generation

作　　者：薛艳丽[1] 程太旺[2] 李晓峰[2] 林圣路[1] 傅盘铭[2] 

机构地区：[1]山东师范大学物理系 [2]中国科学院物理所凝聚态研究中心光物理实验室,北京100080

出　　处：《原子与分子物理学报》2003年第3期317-321,共5页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金资助项目 项目编号 :6972 5 0 10和 696780 0 8

摘　　要：采用数值方法研究静电场和不同的激光脉冲对氢原子的电离率和高次谐波的影响。结果表明脉冲形状和电离率之间有着确定的关系 ,电离率反过来又影响了谐波谱的性质 ;另外 ,随着所加的静电场强度的增大 ,电离率呈上升的趋势 。We study the effects of pulse shape and static electric field on ionization and high order harmonic generation (HHG) of a one dimensional model hydrogen atom. The series of results indicate that there is a certain relationship between the ionization probability and the pulse shape, which in turn influences the character of HHG. The ionization probability increases as the additional field intensity is increased. The HHG spectrum exhibits a double platea structure when the intensity of the electric field is suitable.

关 键 词：高次谐波 电离率 脉冲 

分 类 号：O562.1[理学—原子与分子物理]