Open AccessFluorescence measurement and acoustic diagnostics of plasma channels in air
Author(s) -
Zuoqiang Hao,
Jie Zhang,
Jianhua Yu,
Zhe Zhang,
Junqing Zhong,
Zang Chong-Zhi,
Zuanming Jin,
Zhaohua Wang,
Zhiyi Wei
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.299
Subject(s) - femtosecond , plasma , plasma diagnostics , rayleigh scattering , laser induced fluorescence , plasma channel , fluorescence , materials science , sensitivity (control systems) , optics , channel (broadcasting) , laser , temporal resolution , physics , telecommunications , computer science , quantum mechanics , electronic engineering , engineering
A plasma channel up to 80 Rayleigh lengths is formed when intense femtosecond laser pulses propagate in air. Two methods, fluorescence measurement and acoustic diagnostics, are used to probe the plasma channel 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.