论文标题
揭示横梁的模态含量
Revealing the modal content of obstructed beams
论文作者
论文摘要
在这项工作中，我们提出了相干结构光束的自我修复能力的预测因子/指标：该田的模态含量。具体而言，被阻塞和未缠绕的梁的模态光谱之间的保真度是对梁在任意障碍物后可能会自我旋转的程度的有用度量。由于任何光场都可以根据任何选择的正统基础分解，因此，该分析的限制性不如确定自我修复能力的其他方法。此外，由于模态含量是繁殖不变的，因此可以在任何方便的横向平面上以这种方式研究光束自我重建。作为一个案例研究，我们提供了令人信服的实验证据，证明了拉瓜尔 - 高斯比贝塞尔高斯梁的自我修复特性的优越性；分析主要由拟议的度量促进。
In this work, we propose a predictor/indicator of the self-healing ability of coherent structured light beams: the field's modal content. Specifically, the fidelity between the obstructed and unobstructed beams' modal spectrum serves as a useful measure of the degree to which the beam will likely self-heal after an arbitrary obstacle. Since any optical field can be decomposed in terms of any chosen orthonormal basis, this analysis is, therefore, less restrictive than other methods for determining self-healing ability. Furthermore, since modal content is propagation invariant, this allows beam self-reconstruction to be studied in this way at any convenient transverse plane. As a case study, we present convincing experimental evidence for the superiority of the self-healing properties of Laguerre-Gaussian over Bessel-Gaussian beams; analysis that is facilitated primarily by the proposed measure.
