Numerical Analysis of Beam Spreading of High-Power Solid Laser Propagation Through Non-Kolmogorov Turbulent Atmosphere

Yujie, 李玉杰 Li; Xianmei, 钱仙妹 Qian; Wenyue, 朱文越 Zhu; Xikui, 苗锡奎 Miao

doi:10.3788/aos201838.0601002

Cited by 2 publications

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“…In 2017, Han et al used the step Fourier method to simulate the two-way transmission of the laser and analyzed the backward enhancement effect of the plane mirror and the angle of reflection on the scintillation index by calculating the scintillation index of the retroreflection spot [ 19 ]. In 2018, Li et al simulated the scintillation index of plane waves propagating in atmospheric turbulence with the non-Kolmogorov spectrum and compared the variation of the scintillation index of the Kolmogorov spectrum and the non-Kolmogorov spectrum alone on the turbulent path [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Simulation and Analysis of Mie-Scattering Lidar-Measuring Atmospheric Turbulence Profile

Mao

Zhang

et al. 2022

Sensors

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Based on the residual turbulent scintillation theory, the Mie-scattering lidar can measure the intensity of atmospheric turbulence by detecting the light intensity scintillation index of the laser return signal. In order to evaluate and optimize the reliability of the Mie-scattering lidar system for detecting atmospheric turbulence, the appropriate parameters of the Mie-scattering lidar system are selected and optimized using the residual turbulent scintillation theory. Then, the Fourier transform method is employed to perform the numerical simulation of the phase screen of the laser light intensity transformation on the vertical transmission path of atmospheric turbulence. The phase screen simulation, low-frequency optimization, and scintillation index calculation methods are provided in detail, respectively. Based on the phase distribution of the laser beam, the scintillation index is obtained. Through the relationship between the scintillation index and the atmospheric turbulent refractive index structure constant, the atmospheric turbulence profile is inverted. The simulation results show that the atmospheric refractive index structure constant profile obtained by the iterative method is consistent with the input HV5/7 model below 6500 m, which has great guiding significance to carry out actual experiments to measure atmospheric turbulence using the Mie lidar.

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Section: Introductionmentioning

confidence: 99%