Changes of skewness and sharpness of partially coherent decentered annular beams on propagation
Changes of skewness and sharpness of partially coherent decentered annular beams on propagation
复制标题
部分相干偏心环形光束传播过程中偏斜度和锐度的变化
DOI:
10.1016/j.optcom.2015.00.019
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发表时间:
2016-01
影响因子:
2.4
通讯作者:
Wang Tao
中科院分区:
文献类型:
--
作者:
Yang Ting;Ji Xiaoling;Li Xiaoqing;Zhang Hao;Wang Tao
Changes of skewness and sharpness of partially coherent decentered annular beams (PCDA beams) on propagation both in free space and in oceanic turbulence are studied. Based on the Wigner distribution function, the analytical expressions for the skewness parameterAand the kurtosis parameterKof PCDA beams are derived. The analytical expression for the oceanic turbulence parameterT′ related toKis also derived, and characteristics ofT′ are examined. It is found that the behaviors ofAandKin oceanic turbulence are quite different from those in free space. In free space, the mass of the intensity distribution may move from one side of the centroid position axisycto another side at a certain propagation distancez0, andz0is independent of the correlation parameterτ. The mass of the intensity distribution is concentrated on one side ofycon propagation only for a poorly coherent beam in free space, but it is always this situation for different value ofτwhen oceanic turbulence is not weak. In free space, it takes a leptokurtic profile in the far field, and a Gaussian profile appears only for a poorly coherent beam. However, in oceanic turbulence it always reaches a Gaussian profile for different value ofτin the far field.
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影响因子:
3
作者:
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通讯作者:
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DOI:
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发表时间:
1991-02
期刊:
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影响因子:
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发表时间:
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影响因子:
1.1
作者:
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DOI:
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发表时间:
1994-10-01
影响因子:
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