Achromatic metalens in visible band based on nano double trapezoid structures

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-02-10 DOI:10.1016/j.optmat.2025.116801

Yang Zheng , Wenqing Zhu , Liangping Xia , Guohui Chen , Yilin Li , Suihu Dang , Man Zhang , Chunlei Du

引用次数: 0

Abstract

An achromatic metalens in visible band with a double trapezoid-shaped unit cell structure that consists of arrays of titanium dioxide nanopillars on a flat substrate is proposed. Compared with the traditional achromatic metalenses with rectangular unit cell, this kind of structures provide more choices on phase modulation from differently shaped nanofins, enabling a larger range of phase modulation. Benefit for this, the cell structure is easy to fit for the theoretical phase modulation with different positions and wavelengths in the achromatic metalens with the waveband from 425 to 635 nm. The maximum focal length shift is only 10.2 μm comparing with blue and red light in the experiment.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.