Xu Qian, Xu Yonggen, Liu Wenli, Zhao Liang
J Opt Soc Am A Opt Image Sci Vis. 2024 Jun 1;41(6):1027-1036. doi: 10.1364/JOSAA.520531.
The correlation and polarization singularities as the important parameters of a radially polarized Gaussian Schell-model vortex beam propagating in oceanic turbulence have been investigated in detail. On the one hand, the correlation singularity of the beam will first split, and then generate new correlation singularities, and finally vanish in pairs. The longer the propagating distance, the larger the rate of dissipation of mean-square temperature, and the lower initial correlation lengths reduce the stability of correlation singularities. On the other hand, polarization singularities also split during transmission. The different initial correlation lengths cause the uneven distribution of polarization singularities, and the high order topological charge leads to the generation of new polarization singularities at short distances. Our numerical findings may be of great significance for detection and imaging of the oceanic optical telecommunication links.
作为径向偏振高斯谢尔模型涡旋光束在海洋湍流中传播的重要参数，其相关性和偏振奇点已被详细研究。一方面，光束的相关性奇点首先会分裂，然后产生新的相关性奇点，最终成对消失。传播距离越长，均方温度的耗散率越大，且初始相关长度越低会降低相关性奇点的稳定性。另一方面，偏振奇点在传输过程中也会分裂。不同的初始相关长度导致偏振奇点分布不均匀，且高阶拓扑电荷会在短距离内导致新的偏振奇点产生。我们的数值研究结果可能对海洋光通信链路的检测和成像具有重要意义。
