Dynamics of femtosecond laser filamentation in argon with non-uniform density distribution

被引：3
|
作者：
Wang, Zhanxin [1 ]
Zhang, Chaojin [1 ,2 ]
Liu, Jiansheng [2 ]
Xu, Zhizhan [2 ]
机构：
[1] Jiangsu Normal Univ, Sch Phys & Elect Engn, Xuzhou 221116, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 09期
关键词：
PULSE SELF-COMPRESSION; HIGHER-ORDER NONLINEARITIES; TRANSPARENT MEDIA; AIR FILAMENTS; CYCLE; GAS; GENERATION; COLLAPSE; LIGHT;
D O I：
10.1364/OE.20.009558
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We numerically investigated the femtosecond laser filamentation in a cell filled with argon of non-uniform density distribution. By comparison with the case of uniform density distribution, we demonstrated the crucial differences in the dynamics between the two cases. We found that the pulse-splitting appeared earlier due to the sensitivity of rear-part refocusing to the plasma density and a double. shape appeared in the spatio-temporal intensity profile in the non-uniform density case. (c) 2012 Optical Society of America
引用
收藏
页码：9558 / 9563
页数：6
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