Abstract
A FMCW LiDAR system of both the distributed feedback laser and external cavity laser is established in baseband beat notes, rather than up-conversion to an intermediate frequency to exclude flicker noise. Meanwhile, utilizing fast-scanningMEMSmirrors, high-quality real-time (1 fps) 4-D images of the slow-moving object (10 mm/s) can be directly constructed at the baseband with a central frequency as low as 100 kHz and a small Doppler shift. The proposed LiDAR architecture based on such a low-frequency baseband significantly improves the optical power budget on the transmitter side and eliminates the costly high-speed sampling circuits on the receiver side.
Original language | English |
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Pages (from-to) | 20401-20411 |
Number of pages | 11 |
Journal | Optics Express |
Volume | 32 |
Issue number | 11 |
DOIs | |
State | Published - 20 May 2024 |