Lin Rong, Yu Hancheng, Zhu Xinlei, Liu Lin, Gbur Greg, Cai Yangjian, Yu Jiayi
Opt Express. 2020 Mar 2;28(5):7152-7164. doi: 10.1364/OE.387443.
We introduce a new class of twisted partially coherent beams with a non-uniform correlation structure. These beams, called twisted Hermite Gaussian Schell model (THGSM) beams, have a correlation structure related to Hermite functions and a twist factor in their degree of coherence. The spectral density and total average orbital angular momentum per photon of these beams strongly depend on the distortions applied to their degree of coherence. On propagation through free space, they exhibit both self-splitting and rotation of their spectral density profile, combining the interesting effects of twisted beams and non-uniformly correlated beams. We demonstrate that we can adjust both the beam order and the twist factor of THGSM beams to improve their resistance to turbulence.
我们引入了一类具有非均匀相关结构的新型扭曲部分相干光束。这些光束被称为扭曲厄米高斯谢尔模型（THGSM）光束，其相关结构与厄米函数有关，并且在其相干度中有一个扭曲因子。这些光束的光谱密度和每个光子的总平均轨道角动量强烈依赖于施加在其相干度上的畸变。在自由空间中传播时，它们表现出光谱密度分布的自分裂和旋转，结合了扭曲光束和非均匀相关光束的有趣效应。我们证明，我们可以调整THGSM光束的光束阶数和扭曲因子，以提高它们对湍流的抗性。
