Our research concerns the problem of constructing multiple-twisted spiral beams and the geometry of their fine structure. We analyzed the distribution of energy flows in triangular spiral beams and critical points’ positions responsible for their structural stability. It was shown experimentally that a three-spot beam propagates without breaking the internal structure, while the intricate framing of a multiple-twisted triangular beam is distorted beyond the Rayleigh length. We associate such a structural violation with the imperfection of the holographic grating in the spatial light modulator.

中文翻译：

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螺旋光束的几何形状：3D 弯曲结构涡旋光束和光流

我们的研究涉及构建多扭曲螺旋梁的问题及其精细结构的几何形状。我们分析了三角形螺旋梁中能量流的分布和负责其结构稳定性的关键点位置。实验表明，三点光束在传播时不会破坏内部结构，而多扭曲三角形光束的复杂框架会扭曲超过瑞利长度。我们将这种结构违规与空间光调制器中全息光栅的缺陷联系起来。