Line-scan phase-resolved synthetic wavelength LiDAR using an off-axis holographic approach

Jingkai Zhang; Joseph A. Izatt; Robert Trout; Jianwei D. Li; Julia S. Foust; Al-Hafeez Dhalla; Kevin C. Zhou

doi:10.1117/12.3002644

13 March 2024 Line-scan phase-resolved synthetic wavelength LiDAR using an off-axis holographic approach

Jingkai Zhang, Joseph A. Izatt, Robert Trout, Jianwei D. Li, Julia S. Foust, Al-Hafeez Dhalla, Kevin C. Zhou

Proceedings Volume PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII; PC128300E (2024) https://doi.org/10.1117/12.3002644
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

In fields such as virtual/augmented reality, robotic vision, facial recognition, and biomedical imaging, the demand for accurate, fast coherent 3D surface imaging technology is increasing. However, current technologies like FMCW LiDAR have limitations in terms of low spectral bandwidth efficiency and high cost. We demonstrate a novel approach using synthetic wavelength phase unwrapping and line-scan off-axis holography. Our system achieved fast 3D surface imaging with a non-ambiguous depth range of 22.3mm. We validated system performance using a 3D-printed test target and a U.S. copper penny.

Conference Presentation

Citation Download Citation

Jingkai Zhang, Joseph A. Izatt, Robert Trout, Jianwei D. Li, Julia S. Foust, Al-Hafeez Dhalla, and Kevin C. Zhou "Line-scan phase-resolved synthetic wavelength LiDAR using an off-axis holographic approach", Proc. SPIE PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII, PC128300E (13 March 2024); https://doi.org/10.1117/12.3002644

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