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
孙顺红 1刘永欣2
作者信息
- 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
- 折叠
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.
Abstract
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 Bessel-Gaussian 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 Bessel-Gaussian 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Key words
scintillation factor/numerical simulation/ocean turbulence/propagation characteristics/radial polarization引用本文复制引用
基金项目
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)
出版年
2024
国家科技期刊平台
NSTL
万方数据