Huang Yongping, Wang Fanhou, Gao Zenghui, Zhang Bin
Opt Express. 2015 Jan 26;23(2):1088-102. doi: 10.1364/OE.23.001088.
Propagation properties of partially coherent electromagnetic hyperbolic-sine-Gaussian (PCESHG) vortex beams through non-Kolmogorov atmospheric turbulence, including the spectral degree of polarization and evolution behavior of coherent vortices and average intensity are investigated in detail by using the extended Huygens-Fresnel principle and the spatial power spectrum of the refractive index of non-Kolmogorov turbulence. It is shown that the motion, creation and annihilation of the coherent vortices of PCESHG vortex beams in non-Kolmogorov turbulence may appear with the increasing propagation distance, and the distance for the conservation of the topological charge depends on the turbulence parameters and beam parameters. In additions, the evolution behavior of coherent vortices, average intensity and spectral degree of polarization vary significantly for different values of the generalized exponent parameter and the generalized refractive-index structure parameter of non-Kolmogorov turbulence, and the beam parameters as well as the propagation distance.
利用扩展的惠更斯-菲涅尔原理和非柯尔莫哥洛夫湍流折射率的空间功率谱，详细研究了部分相干电磁双曲正弦-高斯（PCESHG）涡旋光束在非柯尔莫哥洛夫大气湍流中的传播特性，包括偏振光谱度、相干涡旋的演化行为和平均强度。结果表明，随着传播距离的增加，PCESHG涡旋光束在非柯尔莫哥洛夫湍流中的相干涡旋可能会出现运动、产生和湮灭，拓扑电荷守恒的距离取决于湍流参数和光束参数。此外，对于非柯尔莫哥洛夫湍流的广义指数参数和广义折射率结构参数的不同值，以及光束参数和传播距离，相干涡旋的演化行为、平均强度和偏振光谱度会有显著变化。
