Disordered metasurface enabled single-shot full-Stokes polarization imaging leveraging weak dichroism

Qingbin Fan, Weizhu Xu, Xuemei Hu, Wenqi Zhu, Tao Yue (), Feng Yan (), Peicheng Lin, Lu Chen, Junyeob Song, Henri J. Lezec, Amit Agrawal, Yanqing Lu () and Ting Xu ()
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Qingbin Fan: Nanjing University
Weizhu Xu: Nanjing University
Xuemei Hu: Nanjing University
Wenqi Zhu: National Institute of Standards and Technology
Tao Yue: Nanjing University
Feng Yan: Nanjing University
Peicheng Lin: Nanjing University
Lu Chen: National Institute of Standards and Technology
Junyeob Song: National Institute of Standards and Technology
Henri J. Lezec: National Institute of Standards and Technology
Amit Agrawal: National Institute of Standards and Technology
Yanqing Lu: Nanjing University
Ting Xu: Nanjing University

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract Polarization, one of the fundamental properties of light, is critical for certain imaging applications because it captures information from the scene that cannot directly be recorded by traditional intensity cameras. Currently, mainstream approaches for polarization imaging rely on strong dichroism of birefringent crystals or artificially fabricated structures that exhibit a high diattenuation typically exceeding 99%, which corresponds to a polarization extinction ratio (PER) >~100. This not only limits the transmission efficiency of light, but also makes them either offer narrow operational bandwidth or be non-responsive to the circular polarization. Here, we demonstrate a single-shot full-Stokes polarization camera incorporating a disordered metasurface array with weak dichroism. The diattenuation of the metasurface array is ~65%, which corresponds to a PER of ~2. Within the framework of compressed sensing, the proposed disordered metasurface array serves as an efficient sensing matrix. By incorporating a mask-aware reconstruction algorithm, the signal can be accurately recovered with a high probability. In our experiments, the proposed approach exhibits high-accuracy full-Stokes polarimetry and high-resolution real-time polarization imaging. Our demonstration highlights the potential of combining meta-optics with reconstruction algorithms as a promising approach for advanced imaging applications.

Date: 2023
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Citations: View citations in EconPapers (2)

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DOI: 10.1038/s41467-023-42944-6

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