Chinese Optics, Volume. 18, Issue 1, 142(2025)

Scintillation index analysis of radial Gaussian vortex beam array propagation in the atmosphere

Yan-na ZHANG, Jun OU*, Hao CHI, and Shu-na YANG
Author Affiliations
  • School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
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    Figures & Tables(9)
    Schematic diagram of radial Gaussian vortex beam array distribution at 处径向高斯涡旋光束阵列分布示意图
    Phase screen simulation diagram
    Light intensity (a)~(d) and phase distribution (e)~(h) of RGVBA at various propagation distances in free space
    The intensity distribution of RGVBA under different refractive index structure constants (, , Z=2000 m). (a) ; (b) ; (c) ; (d) 不同折射率结构常数下RGVBA的光强分布(,,Z=2000 m)。(a) ;(b) ;(c) ;(d)
    Variation of the on-axis scintillation index values of (a) RGVBA and (b) GVB at different propagation distances
    On-axis scintillation index values of GVB and RGVBA varying with rytov index in the medium fluctuation region
    Under the same turbulence conditions, the on-axis scintillation index values of RGVBA with different initial beam parameters as a function of the number of beamlets (Num). (a) With different OAM values; (b) with different radial array radii 相同湍流条件下不同初始光束参数的RGVBA轴上闪烁指数值随子光束数目(Num)的变化情况。 (a)不同OAM值;(b)不同径向阵列半径
    • Table 1. Phase screen simulation parameters

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      Table 1. Phase screen simulation parameters

      采样网格$N$采样间隔$\Delta x$/mm相位屏间隔$\Delta Z$/m湍流内尺度${l_0}$/m湍流外尺度${L_0}$/m
      10241.72000.0110
      波长$\lambda $/nmOAM值$l$子光束半径${w_0}$/mm阵列半径${r_0}$/cm子光束数目$Num$
      15501~331.86
    • Table 2. The rytov index corresponding to each refractive index structure constant and transmission distance

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      Table 2. The rytov index corresponding to each refractive index structure constant and transmission distance

      折射率结构常数$C_n^2$传输距离范围$Z$rytov指数$\sigma _R^2$
      $1 \times {10^{ - 15}}{m^{{{ - 2} \mathord{\left/ {\vphantom {{ - 2} 3}} \right. } 3}}}$200~2400 m0.0010~0.0991
      $5 \times {10^{ - 15}}{m^{{{ - 2} \mathord{\left/ {\vphantom {{ - 2} 3}} \right. } 3}}}$200~2400 m0.0052~0.4953
      $1 \times {10^{ - 14}}{m^{{{ - 2} \mathord{\left/ {\vphantom {{ - 2} 3}} \right. } 3}}}$200~2400 m0.0104~0.9905
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    Yan-na ZHANG, Jun OU, Hao CHI, Shu-na YANG. Scintillation index analysis of radial Gaussian vortex beam array propagation in the atmosphere[J]. Chinese Optics, 2025, 18(1): 142

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    Paper Information

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    Received: May. 28, 2024

    Accepted: Aug. 5, 2024

    Published Online: Mar. 14, 2025

    The Author Email:

    DOI:10.37188/CO.2024-0098

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