受轨道角动量启发的新型光学：角向超构透镜。

OAM-inspired new optics: the angular metalens.

作者信息

Ruffato Gianluca

机构信息

Department of Physics and Astronomy 'G. Galilei', University of Padova, Padova, Italy.

出版信息

Light Sci Appl. 2021 May 6;10(1):96. doi: 10.1038/s41377-021-00541-6.

DOI:10.1038/s41377-021-00541-6

PMID:33958575

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8102526/

Abstract

Analogous to the behavior of a common converging lens for the input of tilted waves, a recent publication suggests a new optical element with an azimuthal-quadratic phase profile for the focusing of orbital angular momentum beams at distinct angular positions. Its realization in a metasurface form enables the combined measurement of orbital and spin angular momentum using a single optical component.

摘要

类似于普通会聚透镜对倾斜波输入的作用，最近的一篇出版物提出了一种具有方位角二次相位分布的新型光学元件，用于在不同角位置聚焦轨道角动量光束。以超表面形式实现它能够使用单个光学元件对轨道角动量和自旋角动量进行联合测量。