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Laser & Optoelectronics Progress, Volume. 55, Issue 12, 120101(2018)

Numerical Study on Transmission Performance of Laguerre-Gaussian Beam in Non-Kolmogorov Turbulence

Chuankai Luo, Fang Lu, Chenxu Yin, and Xiang'e Han*
Author Affiliations
  • School of Physics and Optoelectronic Engineering, Xidian University, Xi'an, Shaanxi 710071, China
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    Figures&Tables (9)
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    References (16)
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    Figures & Tables(9)
    Schematic of beam propagtion by numerical simulation

    Fig. 1. Schematic of beam propagtion by numerical simulation

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    Helical decomposition results at different distances. (a) 0 m; (b) 600 m; (c) 1200 m; (d) 1800 m

    Fig. 2. Helical decomposition results at different distances. (a) 0 m; (b) 600 m; (c) 1200 m; (d) 1800 m

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    Helical decomposition results after 1500 m propagation in turbulence with different Cn2. (a) Cn2=0; (b) Cn2=1×10-16; (c) Cn2=5×10-16; (d) Cn2=1×10-15

    Fig. 3. Helical decomposition results after 1500 m propagation in turbulence with different Cn2. (a) Cn2=0; (b) Cn2=1×10-16; (c) Cn2=5×10-16; (d) Cn2=1×10-15

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    Influences of turbulence parameters on topological charge detection probability. (a) Turbulence intensity Cn2; (b) generalized index α; (c) outer scale L0; (d) inner scale l0

    Fig. 4. Influences of turbulence parameters on topological charge detection probability. (a) Turbulence intensity Cn2; (b) generalized index α; (c) outer scale L0; (d) inner scale l0

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    LG beam radius versus propagation distance under different turbulence intensities

    Fig. 5. LG beam radius versus propagation distance under different turbulence intensities

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    Schematic of scintillation index calculation principle

    Fig. 6. Schematic of scintillation index calculation principle

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    LG beam scintillation index versus propagation distance under different turbulence intensities

    Fig. 7. LG beam scintillation index versus propagation distance under different turbulence intensities

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    Bit error rate versus RSN0 under different turbulence intensities

    Fig. 8. Bit error rate versus RSN0 under different turbulence intensities

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    • Table 1. Parameters for numerical simulation

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      Table 1. Parameters for numerical simulation

      ParameterDataParameterData
      Wavelengthλ /nm1550Beam waistw0 /mm10
      Topologicalcharge l3Light fieldplane size /m0.2×0.2
      Number ofsamples512×512Outer scaleL0 /m1-10
      Inner scalel0 /m0.01-0.1TurbulenceintensityCn2 /m-2/31×10-16-1×10-15
      Genera lindexα3-4Grid sizeof phasescreen /m0.001
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    Chuankai Luo, Fang Lu, Chenxu Yin, Xiang'e Han. Numerical Study on Transmission Performance of Laguerre-Gaussian Beam in Non-Kolmogorov Turbulence[J]. Laser & Optoelectronics Progress, 2018, 55(12): 120101

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    Paper Information

    Category: Atmospheric Optics and Oceanic Optics

    Received: May. 29, 2018

    Accepted: Jul. 5, 2018

    Published Online: Aug. 1, 2019

    The Author Email: Xiang'e Han (xehan@mail.xidian.edu.cn)

    DOI:10.3788/LOP55.120101

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology