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Chin. Opt. Lett.
 Home  List of Issues    Issue s1 , Vol. 09 , 2011    10.3788/COL201109.s10303


Diagnostics of air plasma ablated by 1064 nm laser pulses
Wenfeng Luo, Wei Zhao, Yixiang Duan, Haojing Wang
State Key Laboratory of Transient Optics and Photonics, [Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences], Xi'an 710119, China

Chin. Opt. Lett., 2011, 09(s1): pp.s10303

DOI:10.3788/COL201109.s10303
Topic:High Speed Diagnostics, Image Processing, and Data Analysis
Keywords(OCIS Code): 020.0020  140.0140  300.0300  

Abstract
The characteristics of air plasma are studied using laser-induced breakdown spectroscopy at room temperature in air at atmospheric pressure. The electron temperature of 20796 K is determined using the Boltzmann plot method with six ionic nitrogen lines at 444.703, 463.054, 500.515, 566.663, 594.165, and 648.205 nm. The electron number density inferred by measuring the Stark broadened profile of well-isolated Hα line (656.273 nm) is 1.83 £ 1017 cm?3. The hypotheses of the local thermodynamic equilibrium and optically thin plasma are verified based on the experimental results. These results are beneficial for better understanding of the terahertz (THz) wave generation in pulsed laser induced air plasma.

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Received:2010/12/15
Accepted:2011/1/6
Posted online:2011/6/27

Get Citation: Wenfeng Luo, Wei Zhao, Yixiang Duan, Haojing Wang, "Diagnostics of air plasma ablated by 1064 nm laser pulses," Chin. Opt. Lett. 09(s1), s10303(2011)

Note: This work was supported by the Chinese Academy of Sciences/State Administration of Foreign Experts Affairs. International Partnership Program for Creative Research Teams.



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