| The influence of atmospheric turbulence on partially coherent flat-topped Gaussian beam is studied numerically in this paper. From the results of numerical simulation we deduce two expressions. One describes the relations among the rms width of the beam, the intensity of turbulence and the propagating distance. Another describes the relation between the coherent length of the beam and that of the turbulence. Partially coherent flat-topped Gaussian beam is expanded into an independent superposition of Hermite-Gaussian modes. Propagation of beam through atmospheric turbulence is treated with phase screen approximation. |
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