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High-resolution multispectral three-dimensional profiling using a metasurface-enhanced SPAD quanta image sensor.

Peter W R Connolly, Harmony Z Li, Dan Yao

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    |July 30, 2025
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    Summary
    This summary is machine-generated.

    This study introduces a novel single-photon LiDAR camera for high-resolution 3D color imaging. The photon-efficient system achieves millimeter depth resolution and accurate color reconstruction, enabling advanced imaging applications.

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    Area of Science:

    • Photonics and Imaging Technology
    • Advanced Sensor Development

    Background:

    • Traditional LiDAR systems face limitations in resolution and color imaging capabilities.
    • Developing compact, efficient sensors for 3D imaging is crucial for emerging technologies.

    Purpose of the Study:

    • To present a novel single-photon LiDAR imaging camera.
    • To achieve simultaneous high-resolution depth and color estimation.
    • To demonstrate a compact and photon-efficient imaging system.

    Main Methods:

    • Utilized a time-gated CMOS single-photon avalanche diode detector array.
    • Integrated a metasurface-based plasmonic color filter array for 3D color imaging.
    • Employed a sliding detector gate for millimeter-scale depth resolution.

    Main Results:

    • Achieved high-resolution, simultaneous depth and color estimation.
    • Demonstrated high-fidelity color reconstruction using minimal photons per pixel.
    • Showcased millimeter-scale depth resolution with a sliding detector gate.

    Conclusions:

    • The developed single-photon LiDAR camera offers advanced depth-sensitive, multispectral imaging.
    • This technology has broad applicability in space exploration, autonomous navigation, AR/VR, and biomedical imaging.
    • The photon-efficient design enables new possibilities for 3D color imaging systems.