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SELF-FOCUSING AND HARMONIC EMISSION EFFECT INDU-CED BY TEN-MICRON-SMALL-SCALE LASER SPOT IN PLASMAS
Author(s) -
Lin Zhang,
He Xing-Fa,
Huihuang Zhang,
Xiaoqin Wang,
Yijie Zhuang,
Lin Kang-Chun,
Zhiwen Zhao,
Wei Xiao-Chun,
Shi A-Ying,
Tian Lan,
Mingqiu Dai,
Xiaohua Shen,
Jiaming Li
Publication year - 1991
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.40.234
Subject(s) - filamentation , laser , physics , harmonic , plasma , optics , radius , scattering , atomic physics , acoustics , computer security , quantum mechanics , computer science
We present in this paper the temporally and spatially resolved feature of the side scattered 3ω0/2 harmonic emission, induced by A single laser spot with ten-micron-radius-scale in a preformed laser plasma. The close relation of the harmonic emission with such a small scale laser self-focusing filamentation has been discussed in detail. It is suggested that the side scattered harmonic signal from a underdense region as low as 0.05nc may be caused by the Lang-muir wave and/or ion-acoustic wave scattering induced by laser dynamic filamentation.

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