Twist-Angle-Controlled Nonlinear Circular Dichroism on Gold-Crystal Hybrid Metasurfaces

Zhang, Xuecai1; Deng, Junhong2; Li, Guixin1,3

2024-05-16

10.1021/acs.nanolett.4c01289

NANO LETTERS   影响因子和分区

1530-6984

1530-6992

Optical chirality, which plays important roles in liquid crystal display and biological and chemical detection, has been attracting scientists' attention due to its potential applications in optical information processing. Usually, the chiral optical response of natural molecules is very weak. However, the emergence of metasurfaces offers a promising solution to solve this issue. By judiciously designing the geometry of meta-atoms, we have realized strong optical circular dichroism (CD) in both linear and nonlinear optical regimes. However, tuning of the CD with a metasurface remains challenging. Here, we propose the twist-angle-controlled nonlinear CD effect by using the second-harmonic generation process on a gold-crystal hybrid metasurface. The CD effect of the second-harmonic waves can be tuned well by controlling the twist angle between the two constituent materials. The proposed hybrid metasurface may open new avenues for developing ultracompact and multifunctional nonlinear optical devices.

metasurface plasmonics circular dichroism second-harmonic generation

SCI ; EI

英语

第一 ; 通讯

Guangdong Provincial Introduction of Innovative Research and Development Team[12161141010] ; National Natural Science Foundation of China[2022YFA1404301] ; National Key Technologies R&D Program of China[2017ZT07C071]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001226081800001

AMER CHEMICAL SOC

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Inst Appl Opt & Precis Engn, Shenzhen 518055, Peoples R China

Zhang, Xuecai,Deng, Junhong,Li, Guixin. Twist-Angle-Controlled Nonlinear Circular Dichroism on Gold-Crystal Hybrid Metasurfaces[J]. NANO LETTERS,2024,24(21).

Zhang, Xuecai,Deng, Junhong,&Li, Guixin.(2024).Twist-Angle-Controlled Nonlinear Circular Dichroism on Gold-Crystal Hybrid Metasurfaces.NANO LETTERS,24(21).

Zhang, Xuecai,et al."Twist-Angle-Controlled Nonlinear Circular Dichroism on Gold-Crystal Hybrid Metasurfaces".NANO LETTERS 24.21(2024).