期刊
OPTICS EXPRESS
卷 18, 期 25, 页码 26007-26017出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.18.026007
关键词
-
类别
资金
- National Natural Science Foundation of China (NSFC) [10734130, 10634020, 60978031]
- National Basic Research Programme of China [2007CB815101]
The propagation of tightly focused femtosecond laser pulse with numerical aperture of 0.12 in air is investigated experimentally. The formation and evolution of the filament bunch are recorded by time-resolved shadowgraph with laser energy from 2.4 mJ to 47 mJ. The distribution of electron density in breakdown area is retrieved using Nomarski interferometer. It is found that intensity clamping during filamentation effect still play a role even under strong external focusing. The electron density in some interaction zones is higher than 3x10(19) cm(-3), which indicates that each air molecule there is ionized. (C) 2010 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据