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Chirality-Assisted Aharonov-Anandan Geometric-Phase Metasurfaces for Spin-Decoupled Phase Modulation
Ji, Ruonan1; Xie, Xin1; Guo, Xuyue1; Zhao, Yang1; Jin, Chuan2; Song, Kun1; Wang, Shaowei3; Yin, Jianbo1; Liu, Yahong1; Jiang, Chengming4; Yang, Chaoshun1; Zhao, Xiaopeng1; Lu, Wei3
Source PublicationACS Photonics
Contribution Rank2

In this work, a quasi-nondispersive and spin-decoupled phase modulation strategy was proposed based on the chiral structure. Owing to the spin-dependent response of the chiral structure, the evolution of the Aharonov-Anandan (AA) geometric phase can be controlled by tuning different structural parameters independently. Additionally, the chiral structure was designed nonresonant or weak-resonant to minimize the influence of strong resonant absorption and large dispersive propagation phase shift, leading to an efficiently quasi-nondispersive phase modulation. To prove the validity of the strategy, a series of umbrella-shaped reflection-type metal-insulator-metal structures were designed as the unit cells and simulated with the finite element method. Moreover, the metasurfaces were designed based on such unit cells to generate broadband orbital angular momentums with different topological charges and spin-switchable holograms, respectively. Simulated and experimental results are in good agreement with the theoretical results. To the best of our knowledge, broadband spin-dependent phase modulation has been achieved without intentionally merging other types of phases for the first time in this work. We believe that this strategy provides a flexible approach for complex spin- or polarization-related applications in optical communication, integrated optics, optical sensing, and other related fields. © 2021 American Chemical Society.

Keywordmetasurface Aharonov−Anandan geometric phase spin-decoupled phase modulation
Indexed BySCI ; EI
WOS IDWOS:000664306400040
PublisherAmerican Chemical Society
EI Accession Number20212510541323
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Document Type期刊论文
Corresponding AuthorJi, Ruonan
Affiliation1.Smart Materials Lab, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an; 710129, China;
2.State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics of Cas, Xi'an; 710119, China;
3.State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai; 200083, China;
4.School of Mechanical Engineering, Dalian University of Technology, Dalian; 116023, China
Recommended Citation
GB/T 7714
Ji, Ruonan,Xie, Xin,Guo, Xuyue,et al. Chirality-Assisted Aharonov-Anandan Geometric-Phase Metasurfaces for Spin-Decoupled Phase Modulation[J]. ACS Photonics,2021,8(6):1847-1855.
APA Ji, Ruonan.,Xie, Xin.,Guo, Xuyue.,Zhao, Yang.,Jin, Chuan.,...&Lu, Wei.(2021).Chirality-Assisted Aharonov-Anandan Geometric-Phase Metasurfaces for Spin-Decoupled Phase Modulation.ACS Photonics,8(6),1847-1855.
MLA Ji, Ruonan,et al."Chirality-Assisted Aharonov-Anandan Geometric-Phase Metasurfaces for Spin-Decoupled Phase Modulation".ACS Photonics 8.6(2021):1847-1855.
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