Scintillation index of partially coherent beam propagating through atmospheric turbulence

The scintillation index of partially coherent beam on propagation in atmospheric turbulence is experimentally measured. It is found that the scintillation index of completely coherent beams increases with the increasing of propagation distance in atmospheric turbulence. However, the scintillation index of partially coherent beams may decrease with the increasing of propagation distance. As the correlation length of incident beams becomes shorter, the scintillation index of beams increases more slowly, and even decreases with the increasing of the radial distance.