采用激光驱动Ar团簇离子产生大椭偏率的高次谐波  

Producing the high harmonics with large ellipticity using the intense laser-driven ionized Ar cluster

作　　者：赵松峰[1] 梁玫艳 管仲[1] ZHAO Song-feng;LIANG Mei-yan;GUAN Zhong(College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou 730070,Gansu,China)

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：《西北师范大学学报（自然科学版）》2019年第2期46-49,54,共5页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(11664035);西北师范大学青年教师科研能力提升计划资助项目(NWNU-LKQN-17-1)

摘　　要：通过数值求解二维模型团簇离子在椭圆偏振激光场中的含时薛定谔方程,理论研究了Ar团簇离子和单个Ar原子产生高次谐波椭偏依赖的差异.研究结果表明,单个Ar原子难以产生大椭偏率的谐波,由于从母核电离出来的电子可以被复合到周围其它离子,使得通过单束椭圆激光驱动Ar团簇离子获得大椭偏率的谐波成为可能.The discrepancies of the ellipticity dependence of high-order harmonics obtained from the isolated atomic Ar and the ionized Ar cluster driven by an elliptical polarized intense laser field by solving the two-dimensional time-dependent Schr dinger equation was investigated theoretically.We showed the possibility for generating high harmonics with large ellipticity from the ionized Ar cluster driven by a single elliptical polarized laser pulse,which is very difficult to realize for the isolated Ar atom.This is because the released electron from its parent ion can be recombined with other nearby ions for the cluster case.

关 键 词：团簇离子 椭圆激光场 大椭偏率谐波 

分 类 号：O437[机械工程—光学工程]