Electrical conductivity of long plasma channels in air generated by self-guided femtosecond laser pulses

被引：159
|
作者：
Schillinger, H [1 ]
Sauerbrey, R [1 ]
机构：
[1] Univ Jena, Inst Opt & Quantenelekt, D-07743 Jena, Germany
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 1999年 / 68卷 / 04期
关键词：
D O I：
10.1007/s003400050699
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
By slightly focussing similar to 1 TW femtosecond laser pulses, we generated long self-stabilizing filaments in air. Free carriers generated by the pulse move in the electrical field of a bias voltage along these filaments. This is a direct measurement demonstrating the creation of a plasma (n(e) > 10(12) cm(-3)) in the filaments, which plays a crucial role in the interplay of diffraction and self-focussing, leading to the formation of long stable channels. These filaments may have applications for laser-triggered lightning.
引用
收藏
页码：753 / 756
页数：4
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