Polarization-dependent metalens with flexible and steerable bifocal spots

Lenses are an important part of modern optical systems. We propose metalenses with bifocal spots, which realizes the beam focusing with controllable intensity ratio and free deflection of the bifocal spots. The metalens consists of an array of titanium dioxide (TiO2) nanopillars, which can provide t...

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Bibliographic Details
Main Authors: Yuhang Sun, Yumin Liu, Tiesheng Wu, Jing Li, Hongjie Fan, Xueyu Wang
Format: Article
Language:English
Published: Elsevier 2023-03-01
Series:Results in Physics
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2211379723000797