DataVXACS PhotonicsPaper
journal article·2025-02-19

Broadband Continuous Integer- and Fractional-Order Multimode OAM Beam Generator via a Metasurface

Ruichen Li, Min Huang, Yijun Zou, Rongrong Zhu, Bin Zheng, Tianshuo Qiu, Hongsheng Chen

ACS Photonics· Volume 12· Issue 2
Publisher page
Source abstract

Abstract

Orbital angular momentum (OAM) waves have attracted significant attention for many applications, such as super-resolution imaging, image edge enhancement, and multiplexing communications, owing to their infinite orthogonal integer-order and nonorthogonal fractional-order modes. As a new degree of freedom for electromagnetic (EM) waves, multimode OAM beam generation is a precondition for their application. However, achieving multimode OAM beams simultaneously in free space is challenging. This study proposed a novel strategy for generating vortex beams with continuous OAM modes constructed from multiresonant metasurfaces of arbitrary shapes. The generator was capable of continuously generating an infinite number of OAM modes (α ∈ [1,3]) in the frequency range of 8 to 12 GHz. An experiment of broadband continuous integer- and fractional-order multimode OAM generators was successfully demonstrated to operate within the frequency range of 8 to 12 GHz. This study contributes to the reduction of the density and mass of generators and provides useful insights for radar detection systems and multiplexing communications.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Orbital Angular Momentum in Optics · Metamaterials and Metasurfaces Applications · Plasmonic and Surface Plasmon Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Interdisciplinary Center for Quantum Information, State Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center

Zhejiang University

School of Information and Electrical Engineering

Hangzhou City University

International Joint Innovation Center, Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, The Electromagnetics Academy at Zhejiang University

Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, Jinhua Institute of Zhejiang University

Department of Basic Sciences

Air Force Engineering University

Funding

Key Research and Development Program of Zhejiang Province · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province · Top-Notch Young Talent of China · Top-Notch Young Talent of Zhejiang Province · Key Research and Development Program of the Ministry of Science and Technology

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