Achromatic metalens in visible band based on nano double trapezoid structures

被引：0

作者：

Zheng, Yang ^{[1
]}

Zhu, Wenqing ^{[1
,2
,3
]}

Xia, Liangping ^{[2
,3
]}

Chen, Guohui ^{[1
,2
,3
]}

Li, Yilin ^{[1
,2
,3
]}

Dang, Suihu ^{[2
]}

Zhang, Man ^{[2
]}

Du, Chunlei ^{[2
,3
]}

机构：

[1] Changchun Univ Sci & Technol, Sch Optoelect Engn, Changchun 130022, Jilin, Peoples R China

[2] Yangtze Normal Univ, Key Lab Micro Nano Optoelect Devices & Intelligent, Chongqing 408100, Peoples R China

[3] Zhuhai Multiscale Optoelect Technol Co Ltd, Zhuhai 519060, Peoples R China

来源：

OPTICAL MATERIALS | 2025年 / 161卷

关键词：

Metalens; Achromatic; Phase modulation; Fabrication; Experiment;

D O I：

10.1016/j.optmat.2025.116801

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 mu m comparing with blue and red light in the experiment.

引用

页数：6

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