首页|Inversely engineered metasurfaces for independent manipulation of transmitted and reflected light fields

Inversely engineered metasurfaces for independent manipulation of transmitted and reflected light fields

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Independent manipulation of transmitted and reflected light fields is a key technology for the realization of multifunctional optical applications,which can be implemented based on multilayered plasmonic or supercell subwavelength structures.However,the former is not suitable for the optical bands,while the latter is insufficient in generating large phase gradients.Here,an adjoint-optimization-based inverse design methodology is proposed,which utilizes the polarization-selective local inter-ference between individual meta-atoms and enables monolayer dielectric metasurfaces to decouple the wavefront of transmitted and reflected optical fields.Moreover,this methodology serves to mitigate the aperiodic electromagnetic crosstalk inherent between adjacent meta-atoms,consequently leading to a significant enhancement in the performance of meta-devices.We analyzed the physical mechanism of adjoint optimization and proposed the concept of phase factors,highlighting their im-portance in the rapid inverse design of meta-devices—an aspect often overlooked in previous research.To demonstrate the feasibility and robustness of our method,we optimize monolayer metasurfaces with different initial structures.These devices efficiently focus and deflect x-linearly and y-linearly polarized incident light in transmission and reflection spaces,respectively.Overall,this methodology holds immense potential for designing multifunctional,high-performing metasurfaces that meet multiple constraints,opening up broad prospects for applications.

full-spacemetasurfacesadjoint optimizationinverse design

Yongjian Liu、Yu Luo、Fei Zhang、Mingbo Pu、Hanlin Bao、Mingfeng Xu、Yinghui Guo、Lanting Li、Xiong Li、Xiaoliang Ma、Xiangang Luo

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National Key Laboratory of Optical Field Manipulation Science and Technology,Chinese Academy of Sciences,Chengdu 610209,China

State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering,Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China

College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China

Research Center on Vector Optical Fields,Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China

Research Center on Vector Optical Fields,Institute of Optics and Electronics,Chinese Academ

Tianfu Xinglong Lake Laboratory,Chengdu 610299,China

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National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaSichuan Science and Technology Program

2023YFB280580062175242U20A202172021ZYCD002

2024

10.1007/s11433-024-2375-8

中国科学:物理学 力学 天文学(英文版)
中国科学院

中国科学:物理学 力学 天文学(英文版)

CSTPCD
影响因子：0.91
ISSN：1674-7348
年,卷(期)：2024.67(7)