Vol. 29, issue 11, article # 5

Antoshkin L.V., Lavrinov V.V., Lavrinova L.N. Numerical analysis of the evolution of phase fluctuations of a light field at the entrance aperture of an adaptive optics system. // Optika Atmosfery i Okeana. 2016. V. 29. No. 11. P. 926–933 [in Russian].
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Abstract:

The paper presents a new algorithm for generating random phase screens, which are used in the numerical solution of the problem of laser radiation propagation in a turbulent atmosphere. Developed on the basis of this algorithm, a numerical model of the evolution of phase fluctuations of a light field at the entrance aperture of an adaptive optics system allows us to estimate the temporal transformation of atmospheric inhomogeneities, which include small-scale wind fluctuations, which occur in the real atmosphere, along with the wind transfer of turbulent inhomogeneities. Using this numerical model, a correlation method for calculation of the speed of the crosswind turbulence transfer from measurements of a wavefront Shack–Hartmann sensor is analyzed.

Keywords:

Shack–Hartmann wavefront sensor, turbulence model, wind speed

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