摘要
使用荧光探测和声学诊断两种方法,对超强飞秒激光脉冲在空气中传输形成的等离子体通道同时进行了测量.两种方法都很好地反映了等离子体通道的演化过程.对两种方法的比较研究发现,声学诊断相对于荧光探测方法来说,具有较高的灵敏度和空间分辨能力,实验装置也更简单,更适宜于等离子体通道的常规测量.
A plasma channel up to 80 Rayleigh lengths is formed when intense femtosecond laser pulses methods, fluorescence measurement and acoustic diagnostics, are used to probe the plasma channel propagate in air. Two simultaneously. Both methods reveal the evolution of the channel in detail. Compared with the fluorescence measurement, the acoustic method is a convenient approach having higher sensitivity and higher spatial resolution in detecting long plasma channels.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第1期299-303,共5页
Acta Physica Sinica
基金
国家自然科学基金(批准号:60478047
10374116
10390160)
国家重点基础研究项目特别基金(批准号:G1999075206)
国家高技术激光核聚变主题资助的课题~~
关键词
强飞秒激光等离子体通道
荧光探测
声学诊断
intense femtosecond laser plasma channel, fluorescent measurement, acoustic diagnostics
