Volume 19, Issue 12 2401993
Research Article

Monolithic Spin-Multiplexing Metalens for Dual-Functional Imaging

Zhenyu Xing

Zhenyu Xing

School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

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Zhelin Lin

Zhelin Lin

School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

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Niu Liu

Niu Liu

School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

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Hao Gao

Hao Gao

School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

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Yuhui Hu

Yuhui Hu

School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

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Zeyang Liu

Corresponding Author

Zeyang Liu

School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

E-mail: [email protected]; [email protected]

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Zijian Jiang

Zijian Jiang

School of Future Technology, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

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Xinliang Zhang

Xinliang Zhang

School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

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Cheng Zhang

Corresponding Author

Cheng Zhang

School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

School of Future Technology, Huazhong University of Science and Technology, Wuhan, Hubei, 430074 China

E-mail: [email protected]; [email protected]

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First published: 31 January 2025
Citations: 4

Abstract

Optical microscopic imaging technology is an essential tool for exploring and understanding the microcosmic realm. Among various imaging modes, bright-field and spiral-phase-contrast imaging are widely used, each capable of extracting distinct morphological information from target objects. However, conventional microscopic imaging devices and systems typically operate in a single mode or require additional modules for mode switching. Here, we present a monolithic photonic spin-multiplexing metalens operating in the red and near-infrared regions, which leverages a spin-multiplexed point spread function to seamlessly switch between bright-field and spiral-phase-contrast imaging modes by simply adjusting the spin state of illumination light. The device demonstrates operational efficiency of up to 80% and imaging resolution better than 4.4 µm (228 lp mm−1) in both modes. The metalens's dual-functional imaging performance is validated with both amplitude-type (custom-made metallic patterns) and phase-type (frog tongue epithelium cells and onion epidermal cells) objects. This work provides a viable solution for compact, lightweight, and easily switchable multi-functional microscopic imaging systems, opening new avenues for applications in biomedical imaging, clinical diagnostics, and material characterization.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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