An exact solution to paraxial propagation of laser beams in longitudinal inhomogeneous plasmas |
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| Authors: | Zhou Bing-Ju Huang Zheng Liu Ming-Wei and Liu Xiao-Juan |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | inhomogeneous plasmas laser
beam paraxial propagation exact solution |
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