We experimentally demonstrate the generation of customized Laguerre–Gaussian (LG) beams whose intensity maxima are localized around any desired curves. The principle is to act with appropriate algebraic functions on the angular spectra of LG beams. We characterize the propagation properties of these beams and compare them with non-diffraction caustic beams possessing the same intensity profiles. The results manifest that the customized-LG beams can maintain their profiles during propagation and suffer less energy loss than the non-diffraction caustic beams, and hence are able to propagate a longer distance. Moreover, the customized-LG beam exhibits self-healing ability when parts of their bodies are blocked. This new structure beam has potential applications in areas such as optical communication, soliton routing and steering, and optical tweezing.

我们通过实验演示了定制拉盖尔高斯 (LG) 光束的生成，其强度最大值位于任何所需曲线周围。原理是用适当的代数函数作用于 LG 光束的角谱。我们描述了这些光束的传播特性，并将它们与具有相同强度分布的非衍射焦散光束进行比较。结果表明，定制的 LG 光束在传播过程中可以保持其轮廓，并且比非衍射焦散光束遭受更少的能量损失，因此能够传播更远的距离。此外，定制的LG光束在身体部分被阻挡时表现出自愈能力。这种新结构梁在光通信、孤子路由和控制以及光镊等领域具有潜在的应用前景。