论文标题
扰动拉瓜仪高斯光束的精细结构：埃尔米特 - 高斯模式光谱和拓扑电荷
Fine structure of perturbed Laguerre-Gaussian beams: Hermite-Gaussian mode spectra and topological charge
论文作者
论文摘要
我们发现Laguerre-Gaussian（LG）梁中光涡流芯的小扰动产生了Hermite-Gauss（HG）模式频谱的精细结构。这种扰动可以通过LG梁场扩展中HG模式的振幅和a振幅的弱变化很容易模拟。我们还从理论上证实并实施了一种用任意数量的环位错数测量LG梁的拓扑电荷的方法。理论讨论和实验研究伴随着估计轨道角动量和干扰LG梁的拓扑电荷的简单例子。
We found that small perturbations of the optical vortex core in the Laguerre-Gaussian (LG) beams generate a fine structure of the Hermite-Gauss (HG) mode spectrum. Such perturbations can be easily simulated by weak variations of amplitudes and phases of the HG modes in the expansion of the LG beam field. We also theoretically substantiated and experimentally implemented a method for measuring the topological charge of LG beams with an arbitrary number of ring dislocations. Theoretical discussion and experimental studies were accompanied by simple examples of estimating the orbital angular momentum and the topological charge of perturbed LG beams.
