径向偏振高阶贝塞尔-高斯涡旋光束在海洋湍流中的传输特性  

Propagation Characteristics of Radially Polarized High-order Bessel-Gaussian Vortex Beams in Ocean Turbulence

作　　者：孙顺红[1] 刘永欣 Sun Shunhong;Liu Yongxin(Department of Electronic Information Engineering,Zhangzhou City Vocational College,Zhangzhou 363000,China;College of Information Science and Engineering,Fujian Provincial Key Laboratory of Light Propagation and Transformation,Huaqiao University,Xiamen 361021,China)

机构地区：[1]漳州城市职业学院电子信息工程系,福建漳州363000 [2]华侨大学福建省光传输与变换重点实验室信息科学与工程学院,福建厦门361021

出　　处：《宁夏大学学报（自然科学版）》2024年第2期138-143,共6页Journal of Ningxia University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61505059);福建省中青年教师教育科研基金资助项目(JAT191436)。

摘　　要：采用分步相位屏的方法,研究了径向偏振高阶贝塞尔-高斯涡旋光束在海洋湍流中的光强特性和闪烁特性.研究发现,径向偏振高阶贝塞尔-高斯涡旋光束传输一段距离后,其中心区域光强受自身特性的影响;对于不同强度的海洋湍流,随着均方温度耗散率的增大,光束所对应的轴上区域的闪烁因子也越大.相较于线偏振光束和径向偏振光束,径向偏振高阶贝塞尔-高斯涡旋光束在海洋湍流中的传输受湍流的影响较小.研究还发现,传输一段距离后,径向偏振高阶贝塞尔-高斯涡旋光束(n≥1)的拓扑荷数越高,光束所对应的闪烁因子越小.另外,相对于径向偏振高阶贝塞尔-高斯涡旋光束(n≥1),拓扑荷数n=0的径向偏振零阶贝塞尔-高斯涡旋光束具有较低的闪烁因子.The intensity and scintillation characteristics of radially polarized high-order Bessel-Gaussian vortex beams in ocean turbulence were studied using the stepwise phase screen method.It was found that the intensity in the central region of a radially polarized high-order Bessel-Gaussian vortex beam is influenced by its intrinsic properties after travelling a certain distance.For ocean turbulence with varying intensities,the scintillation fac-tor in the axial region corresponding to the beam increases as the mean square temperature dissipation rate rises.Compared with linearly polarized beams and radially polarized beams,radially polarized high-order BesselGaussian vortex beams are less affected by ocean turbulence.It was also found that,after propagating a certain beams,the higher the topological charge number(n≥1)of a radially polarized high-order Bessel-Gaussian vor-tex beam,the smaller the scintillation factor.Additionally,the radially polarized zero-order Bessel-Gaussian vortex beam(n=0)exhibits a lower scintillation factor compared to the radially polarized high-order BesselGaussian vortex beam(n≥1).

关 键 词：闪烁因子 数值模拟 海洋湍流 传输特性 径向偏振 

分 类 号：O436[机械工程—光学工程]