首页|Arbitrary acoustic orbital angular momentum detection using dual-layer metasurfaces

Arbitrary acoustic orbital angular momentum detection using dual-layer metasurfaces

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Orbital angular momentum(OAM),with its unique physical properties and vast application prospects,has attracted widespread attention in various fields.Nonetheless,the development of valid and practical acoustic OAM detection methods continues to be a challenging endeavor.In this paper,we propose a novel construction method of dual-layer metasurfaces to achieve a double-conversion process for the waveform reshaping and differentiated focusing of two-dimensional vortex sources with different OAMs.Specifically,by utilizing a concise formula,a one-to-one correspondence is established between the OAM of incident vortex waves and different imaging points.The fundamental principle of this special conversion relationship is rigorously constrained by the directional compensation of phase and the material parameters of dual-layer metasurfaces with different quadratic phase distributions.More importantly,the highly consistent results between numerical demonstrations and acoustic experiments further confirm the feasibility and effectiveness of the proposed OAM detection scheme.Our work provides a new perspective on the precise manipulation for the phase of vortex fields,holding potential applications in super-resolution imaging and the design of acoustic OAM-based devices.

arbitrary acoustic OAM detectionvortex wavesdual-layer metasurfaceswaveform reshapingdifferentiated focusingacoustic experiments

Zhanlei Hao、Haojie Chen、Yuhang Yin、Shan Zhu、Yadong Xu、Cheng-Wei Qiu、Huanyang Chen

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Department of Physics,College of Physical Science and Technology,Xiamen University,Xiamen 361005,China

Department of Electrical and Computer Engineering,National University of Singapore,Singapore 117583,Singapore

Department of Mechanical and Electrical Engineering,Xiamen University Xiamen 361005,China

Pen-Tung Sah Institute of Micro-Nano Science and Technology,Xiamen University,Xiamen 361005,China

School of Physical Science and Technology and Jiangsu Key Laboratory of Thin Films,Soochow University,Suzhou 215006,China

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National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesChina Scholarship CouncilChina Scholarship Council

2020YFA07101002023YFA14071001237441020720220033202106310004202106310005

2024

10.1007/s11433-024-2356-x

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(6)