An optical frequency comb-assisted Amplitude Modulated Continuous Wave (AMCW) LiDAR, which features high-precision and fast-speed ranging is proposed. The AMCW signal with a large frequency aperture is downconverted by a single Optical Frequency Comb (OFC), achieving a reduced data volume. In the proof-of-concept experiments, the ranging precision reaches ±0.4 μm while the measurement refresh rate reaches 150 Hz. By utilizing a Micro-Electro-Mechanical System (MEMS) scanning mirror, high-precision three-dimensional laser imaging was also achieved.
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