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High-resolution multispectral three-dimensional profiling using a metasurface-enhanced SPAD quanta image sensor
Optics Express
|July 30, 2025
Summary
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.
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.
