An exact solution to paraxial propagation of laser beams in longitudinal inhomogeneous plasmas
Zhou Bing-Ju(周并举)a)†, Huang Zheng(黄正)a), Liu Ming-Wei(刘明伟)a) and Liu Xiao-Juan(刘小娟)a)b)
a School of Physics, Hunan University of Science and Technology, Xiangtan 411201, China; b Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
Abstract An exact, general solution for laser beams propagating in longitudinally inhomogeneous plasmas is obtained in the form of the diffraction integral. The Gaussian beam and the Hermite--Gaussian beam are taken for example. In the case of an increasing plasma density along the propagation distance, natural diffraction of the Gaussian beam is retarded. This retardance has a less effect on the central part of the Hermite--Gaussian beam while a considerable rise of the power in bucket (PIB) occurs in the surrounding part of the beam.
Received: 08 May 2007
Revised: 15 June 2007
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No~19874020) and the
Natural Science Foundation of Hunan Province, China (Grant No~05JJ30004).
Cite this article:
Zhou Bing-Ju(周并举), Huang Zheng(黄正), Liu Ming-Wei(刘明伟) and Liu Xiao-Juan(刘小娟) An exact solution to paraxial propagation of laser beams in longitudinal inhomogeneous plasmas 2007 Chinese Physics 16 2721
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