论文标题
简单的计算机程序，以计算任意密切关注的任意（传播和evanscent）矢量光字段
Simple computer program to calculate arbitrary tightly focused (propagating and evanescent) vector light fields
论文作者
论文摘要
在这项工作中，我们提出了一个简单的代码，以计算由具有任意振幅，相位和极化的输入场产生的紧密焦点矢量光场（传播和逃生）。该计划考虑了先前研究的结果，例如通过快速傅立叶转换进行集成以加快集成。计算是在笛卡尔坐标系中进行的，该系统很方便地与具有可编程光学元件（如空间光调制器或数字微龙头阵列）形成的光束进行实验结果进行比较。我们还讨论了如何通过将角网格转移一半并通过取消移动的傅立叶变换引起的相位项来避免原点上的术语。
In this work we present a simple code to calculate tightly focused vectorial light fields (propagating and evanescent) generated by input fields that have arbitrary amplitude, phase and polarization. The program considers results from previous studies, like integration via fast Fourier transforms to speed up the integration. The calculations are done in a Cartesian coordinate system that is convenient to compare with experimental results for beams that are shaped with programmable optical elements like spatial light modulators or digital micromirror arrays. We also discuss how to avoid diverging terms at the origin by shifting the angular mesh by half a point and correcting the output by cancelling the phase term that arises from the shifted Fourier transform.
