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arXiv 2106.01313physics.optics
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近轴结构光传输的模式描述

A modal description of paraxial structured light propagation

Hend Sroor, Chane Moodley, Valeria Rodrıguez-Fajardo, Qiwen Zhan, Andrew Forbes

摘要:

在这里,我们概述了从模式的角度来描述傍轴光传播。通过将初始横向场分解成其元素具有已知和解析传播特性的空间基,我们能够解析地传播任何所需的场,使得计算快速而容易。通过选择一个基础以外的平面波,我们克服了角谱方法中的数值伪影的问题,同时能够提供一个直观的理解,为什么某些类的字段传播,因为他们这样做。我们概述了理论上的概念,比较它的数值角谱的方法,并确认其准确性实验使用一系列有指导意义的例子。我们相信,这种传播光的模式方法将是一个有用的工具箱传播光场。

英文摘要:

Here we outline a description of paraxial light propagation from a modal perspective. By decomposing the initial transverse field into a spatial basis whose elements have known and analytical propagation characteristics, we are able to analytically propagate any desired field, making the calculation fast and easy. By selecting a basis other than that of planes waves, we overcome the problem of numerical artefacts in the angular spectrum approach and at the same time are able to offer an intuitive understanding for why certain classes of fields propagate as they do. We outline the concept theoretically, compare it to the numerical angular spectrum approach, and confirm its veracity experimentally using a range of instructive examples. We believe that this modal approach to propagating light will be a useful addition to toolbox for propagating optical fields.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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