| TAGSM光束在大气湍流中传输 |
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| 引用本文： | 王海燕,李相银.TAGSM光束在大气湍流中传输[J].光子学报,2008,37(10):1992-1996. |
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| 作者姓名： | 王海燕 李相银 |
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| 作者单位： | 南京理工大学,理学院,南京,210094 |
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| 摘 要： | 基于广义惠更斯－菲涅耳原理,利用部分相干光复曲率张量研究了有扭曲的各向异性高斯－谢尔模型光束在湍流大气中的传输规律.根据有扭曲的各向导性高斯-谢尔模型光束在大气湍流中传播距离z处的部分相干复曲率张量给出了光束参量的表达式和详细的数值计算结果.结果表明：大气湍流减缓了光束扭曲参量随传播距离的衰减趋势,增大了主方向上的波前曲率的峰值,而且大气湍流退化了光束的相干性,使得光束扩展严重；光源扭曲参量大小和相干性也都会影响TAGSM光束在大气湍流中传输时各个光束参量的变化规律.
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| 关 键 词： | TAGSM光束 大气湍流 光束参量 复曲率张量 |
| 收稿时间： | 2007-06-18 |
| 修稿时间： | 2007-09-01 |
Propagation of a Twist Anisotropic Gaussian Schell-model Beam in Turbulent Atmosphere |
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| WANG Hai-yan,LI Xiang-yin.Propagation of a Twist Anisotropic Gaussian Schell-model Beam in Turbulent Atmosphere[J].Acta Photonica Sinica,2008,37(10):1992-1996. |
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| Authors: | WANG Hai-yan LI Xiang-yin |
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| Institution: | WANG Hai-yan,LI Xiang-yin(School of Science,Nanjing University of Science , Technology,Nanjing 210094,China) |
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| Abstract: | Based on the extended Huygens-Fresnel integral,the propagation of a twisted anisotropic Gaussian-Schell model(TAGSM)beam in a turbulent atmosphere is studied by use of partially coherent complex curvature tensor.The explicit propagation equations of beam parameter and detailed numerical calculation results are given to illustrate the propagation properties of TAGSM beams in turbulent atmosphere.It is shown that the atmosphere turbulence slows the downtrend of the twist parameter,gives rise the peak value of... |
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| Keywords: | Twisted anisotropic Gaussian-Schell model beam Turbulent atmosphere Beam parameter Complex curvature tensor |
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