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拉盖尔-高斯涡旋光束在水下湍流中的传输特性

Propagation Characteristics of Laguerre-Gaussian Vortex Beams in Underwater Turbulence

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摘要

随着水下光通信、水下目标探测等领域的兴起,激光束在水环境中的传输特性成为近几年的研究热点。2011年迈阿密大学的Korotkova团队[1]提出了由温度和盐度组成的共用海洋湍流模型,研究了高斯光束在海洋湍流传输中的光强变化以及相干特性;2013年Tang等[2]研究了径向极化环形光束在海洋湍流中的光谱密度和偏振特性;2014年Anguita等[3]研究了湍流中涡旋光束传输的轨道角动量特性;2015年四川师范大学的季小玲团队[4]研究了部分相干环状偏心光束在海洋湍流传输中的光束质心位置以及最大光强位置的偏移情况;2017年华侨大学的蒲继雄团队[5]研究了随机电磁高阶贝塞尔-高斯光束在海洋湍流传输中的归一化光谱强度及偏振度的变化情况。

Abstract

An underwater turbulence recognition method based on the detection of vortex interference stripe displacement is proposed. The transmission and interference characteristics of the Laguerre-Gaussian beam in underwater turbulence are simulated using the random phase screen method. The displacement characteristics of the stripes caused by the interference between vortex beams with different topological charges and Gauss beams in free space after turbulence are studied and experimentally analyzed. Experimental and theoretical results show that in a strong turbulent environment, the larger the topological charge, the better the transmission ability of the vortex beams propagating in the turbulence; under the same turbulence intensity, the larger the topological charge, the smaller the displacement of the position of interference stripes. The displacement of interference stripes increases with increasing turbulence intensity of vortex beams with similar topological charges. This indicates that the method for detecting the displacement of vortex interference stripes can effectively detect turbulence intensity and ship wake.

Newport宣传-MKS新实验室计划
补充资料

DOI:10.3788/AOS201939.1001005

所属栏目:大气光学与海洋光学

基金项目:国家自然科学基金、水下测控技术重点实验室基金;

收稿日期:2019-05-08

修改稿日期:2019-06-21

网络出版日期:2019-10-01

作者单位    点击查看

孙艳玲:西安电子科技大学物理与光电工程学院, 陕西 西安 710071
张家瑞:西安电子科技大学物理与光电工程学院, 陕西 西安 710071
鲁振中:西安电子科技大学物理与光电工程学院, 陕西 西安 710071

联系人作者:鲁振中(zzluxidian@126.com)

备注:国家自然科学基金、水下测控技术重点实验室基金;

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引用该论文

Yanling Sun,Jiarui Zhang,Zhenzhong Lu. Propagation Characteristics of Laguerre-Gaussian Vortex Beams in Underwater Turbulence[J]. Acta Optica Sinica, 2019, 39(10): 1001005

孙艳玲,张家瑞,鲁振中. 拉盖尔-高斯涡旋光束在水下湍流中的传输特性[J]. 光学学报, 2019, 39(10): 1001005

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