Direct measurements of the dynamics of self-guided femtosecond laser filaments in air

被引：9

作者：

Gordon, DF ^{[1
]}

Ting, AC ^{[1
]}

Alexeev, I ^{[1
]}

Fischer, RP ^{[1
]}

Sprangle, P ^{[1
]}

机构：

[1] USN, Res Lab, Div Plasma Phys, Washington, DC 20375 USA

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2006年 / 34卷 / 02期

关键词：

air propagation; filamentation; laser-plasma interaction; ultrashort pulses;

D O I：

10.1109/TPS.2006.872179

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Imaging of femtosecond laser filaments is accomplished by utilizing a recently developed diagnostic which is not damaged by the filaments and which greatly reduces the nonlinearities in the detection system. This calibrated detection system allows quantities such as the filament energy and fluence distribution to be determined with greater detail, accuracy, and confidence than was previously possible. The diagnostic is placed on a rail so that filament images can be obtained at a large number of positions along the propagation path. It is found that filaments formed from 450-fs pulses carry higher fluence and propagate farther than filaments formed from 50-fs pulses.

引用

页码：249 / 253

页数：5

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