volume | PIER Journals

Abstract

In order to study beam-propagation factor (M²-factor) of partially coherent Laguerre-Gaussian (PCLG) beams in non-Kolmogorov turbulence, a generalized exponent and a generalized amplitude factor are introduced. Based on the extended Huygens-Fresnel principle and second-order moments of the Wigner distribution function (WDF), the analytical formula of M²-factor for PCLG beams in non-Kolmogorov turbulence is derived. The corresponding numerical results are also calculated. Results show that for PCLG beams propagating in non-Kolmogorov turbulence, the bigger the beam order or outer scale is, or the smaller the correlation length, C²_n, or inner scale is, the smaller the value of the normalized M²-factor is. Furthermore, the normalized M²-factor of PLG beams increases with the increasing of α until it reaches the maximum point, then it gradually decreases with the increasing of α. ²

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Dr. Hui Luo

Dr. Huafeng Xu

Dr. Zhifeng Cui

Dr. Jun Qu