An exact solution to paraxial propagation of laser beams in longitudinal inhomogeneous plasmas

doi:10.1088/1009-1963/16/9/037

中国物理B ›› 2007, Vol. 16 ›› Issue (9): 2721-2724.doi: 10.1088/1009-1963/16/9/037

An exact solution to paraxial propagation of laser beams in longitudinal inhomogeneous plasmas

周并举¹, 黄正¹, 刘明伟¹, 刘小娟²

(1)School of Physics, Hunan University of Science and Technology, Xiangtan 411201, China; (2)School of Physics, Hunan University of Science and Technology, Xiangtan 411201, China;Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China

收稿日期:2007-05-08 修回日期:2007-06-15 出版日期:2007-09-20 发布日期:2007-09-20
基金资助:
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).

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

Received:2007-05-08 Revised:2007-06-15 Online:2007-09-20 Published:2007-09-20
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: inhomogeneous plasmas, laser beam, paraxial propagation, exact solution

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.

Key words: inhomogeneous plasmas, laser beam, paraxial propagation, exact solution

中图分类号: (Laser-plasma interactions)

52.38.-r

42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 52.25.-b (Plasma properties)

周并举, 黄正, 刘明伟, 刘小娟. An exact solution to paraxial propagation of laser beams in longitudinal inhomogeneous plasmas[J]. 中国物理B, 2007, 16(9): 2721-2724.

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[J]. Chinese Physics, 2007, 16(9): 2721-2724.

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An exact solution to paraxial propagation of laser beams in longitudinal inhomogeneous plasmas

An exact solution to paraxial propagation of laser beams in longitudinal inhomogeneous plasmas

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