Simulation and optical scintillation research of Gaussian beam in atmosphere turbulence

In order to study irradiance scintillation after laser propagating though atmospheric turbulence,the method of phase screen was adopted to simulate the optical field in the receiving plane.The computed error of root mean square of the scintillation was compared with that in theory and they accord with each other to a certain extent.The above result is helpful for all near-earth laser application.