论文标题
用空间光调节器探测涡流模式生成和检测的极限
Probing the limits of vortex mode generation and detection with spatial light modulators
论文作者
论文摘要
空间光调节器（SLM）是生成结构化光场的流行工具，并促进了众多光学和光子学应用程序。在这里，我们探讨了这些设备能够在带有轨道角动量（OAM）的所谓涡流梁（OAM）的背景下产生和检测的界限。我们的主要贡献是（理论上和实验上）SLM屏幕的像素化如何影响生成的涡旋模式的质量，并提供有关如何优化显示的数字全息图的性能的有用的启发式方法。这样一来，我们成功地生成和检测了具有拓扑充电$ \ ell = 600 $的高阶光学涡流模式，这是迄今为止使用SLMS达到的最高成就。由于OAM的自由度经常被吹捧为提供潜在的无限国家空间，因此我们希望这项工作将激发研究人员更多地利用高级涡流模式。
Spatial light modulators (SLMs) are popular tools for generating structured light fields and have fostered numerous applications in optics and photonics. Here, we explore the limits of what fields these devices are capable of generating and detecting in the context of so-called vortex beams carrying orbital angular momentum (OAM). Our main contributions are to quantify (theoretically and experimentally) how the pixelation of the SLM screen affects the quality of the generated vortex mode and to offer useful heuristics on how to optimise the performance of the displayed digital hologram. In so doing, we successfully generate and detect a very high order optical vortex mode with topological charge $\ell = 600$, the highest achieved to date using SLMs. Since the OAM degree of freedom is frequently touted as offering a potentially unbounded state space, we hope that this work will inspire researchers to make more use of higher order vortex modes.
