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Chinese Physics, 2007, Vol. 16(9): 2721-2724    DOI: 10.1088/1009-1963/16/9/037
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

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.
Keywords:  inhomogeneous plasmas      laser beam      paraxial propagation      exact solution  
Received:  08 May 2007      Revised:  15 June 2007      Accepted manuscript online: 
PACS:  52.38.-r (Laser-plasma interactions)  
  42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)  
  52.25.-b (Plasma properties)  
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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