Controllable multi-sector array beams

作者：Mengsi Liu, Shuo Liu, Xuejuan Liu, Tian Xia, Shufang Gao, Yuanyuan Jin, Yiping Xu, Shubo Cheng, Shaohua Tao · 发表于：Optics Letters · 年份：2022 · DOI：10.1364/ol.463447 · 被引用次数：13 · 研究领域：Orbital Angular Momentum in Optics、Near-Field Optical Microscopy、Optical Coatings and Gratings

A controllable multi-sector array beam is proposed in this Letter. The beam can be generated with the metalens phase. The intensity distribution of the beam at the focal plane is analyzed in detail. The influence of the parameters a and l on the focal field distribution is discussed. The theoretical and experimental results demonstrate that the parameter a affects the size of the beam, and the additional factor l can adjust the sub-region number of the multi-sector array beams. The beam shows potential for use in optical manipulation and image transmission.