Off-axis multi-wavelength dispersion controlling metalens for multi-color imaging

被引：98

作者：

Dou, Kaihua ^{[1
,2
]}

Xie, Xin ^{[1
,2
]}

Pu, Mingbo ^{[1
,2
]}

Li, Xiong ^{[1
,2
]}

Ma, Xiaoliang ^{[1
,2
]}

Wang, Changtao ^{[1
,2
]}

Luo, Xiangang ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Nanofabricat & Microeng, Chengdu 610209, Peoples R China

[2] Univ Chinese Acad Sci, Sch Optoelect, Beijing 100049, Peoples R China

来源：

OPTO-ELECTRONIC ADVANCES | 2020年 / 3卷 / 04期

基金：

中国国家自然科学基金;

关键词：

off-axis; dispersion control; metalens; color imaging; METASURFACES; LENSES; LIGHT;

D O I：

10.29026/oea.2020.190005

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dispersion control is crucial in optical systems, and chromatic aberration is an important factor affecting imaging quality in imaging systems. Due to the inherent property of materials, dispersion engineering is complex and needs to trade off other aberration in traditional ways. Although metasurface offers an effective method to overcome these limits and results in well-engineered dispersion, off-axis dispersion control is still a challenging topic. In this paper, we design a single-layer metalens which is capable of focusing at three wavelengths (473 nm, 532 nm, and 632 nm) with different incident angles (0 degrees, -17 degrees and 17 degrees) into the same point. We also demonstrate that this metalens can provide an alternative for the bulky color synthetic prism in a 3-chips digital micromirror device (DMD) laser projection system. Through this approach, various off-axis dispersion controlling optical devices could be realized.

引用

页码：1 / 7

页数：7

共 36 条

[1] Nonlinear metamaterials for holography [J].