The Angular Distribution of Optical Emission Spectroscopy from a Femtosecond Laser Filament in Air
SUN Shao-Hua, LIU Xiao-Liang, LIU Zuo-Ye, WANG Xiao-Shan, DING Peng-Ji, LIU Qing-Cao, GUO Ze-Qin, HU Bi-Tao**
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000
Abstract ：Spatial characterization of a femtosecond laser pulse filament in air is experimentally investigated by detecting the optical emission spectroscopy of laser-induced plasmas. It is shown that the intensity of N I spectral lines have different angular distributions along the filament and the calculated results fit the experimental data well. The obtained degree of atomic polarization along the filament strongly depends on the electron density and the propagation characteristic of the femtosecond laser pulse.
收稿日期: 2012-12-05
出版日期: 2013-04-28
:
52.38.Hb
(Self-focussing, channeling, and filamentation in plasmas)
32.30.Jc
(Visible and ultraviolet spectra)
42.25.Ja
(Polarization)
引用本文:
. [J]. 中国物理快报, 2013, 30(4): 45202-045202.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/30/4/045202
或
https://cpl.iphy.ac.cn/CN/Y2013/V30/I4/45202
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2013, Vol. 30 
