Widening of long-range femtosecond laser filaments in turbulent air

被引：24
作者：
Ma, Yuan-yuan [1 ,2 ]
Lu, Xin [1 ]
Xi, Ting-ting [1 ]
Gong, Qi-huang [2 ]
Zhang, Jie [1 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Lab Opt Phys, Beijing 100080, Peoples R China
[2] Peking Univ, Dept Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
[3] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China
来源：
OPTICS EXPRESS | 2008年 / 16卷 / 12期
关键词：
D O I：
10.1364/OE.16.008332
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The influence of air turbulence on the long- range filamentation of femtosecond laser pulses has been numerically investigated. Simulations are performed for different parameters of air turbulence and laser pulses. Simulation results indicate that the diameter of filaments formed by free propagated fs laser pulse can be widened to mm level under air turbulence. However, the widening effect can be suppressed if the propagating distance before the on-set position of filamentation becomes shorter. The reduction of non-linear focal length can be realized by pre-focusing of the laser pulse or increasing of the laser intensity. The effect of the inner scale of air turbulence on the filamentation has also been studied. (C) 2008 Optical Society of America.
引用
收藏
页码：8332 / 8341
页数：10
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