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Based on the extended Huygens–Fresnel diffraction integral, the expressions for the average intensity and the effective size of Laguerre–Gaussian and Bessel–Gaussian Schell-model beams propagating through a paraxial ABCD optical system are obtained in the turbulent atmosphere. The influences of the source coherence and atmospheric turbulence on the propagation of Laguerre–Gaussian and Bessel–Gaussian...
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