Parallel random LiDAR with spatial multiplexing

Hui Cao

doi:10.1117/12.3011732

13 March 2024 Parallel random LiDAR with spatial multiplexing

Hui Cao

Proceedings Volume PC12912, Quantum Sensing, Imaging, and Precision Metrology II; PC1291236 (2024) https://doi.org/10.1117/12.3011732
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

We propose and experimentally demonstrate parallel light detection and ranging (LiDAR) using random intensity fluctuations from a highly multimode laser. We optimize a degenerate cavity to have many spatial modes lasing simultaneously with different frequencies. Their spatio-temporal beating creates ultrafast random intensity fluctuations, which are spatially demultiplexed to generate hundreds of uncorrelated time traces for parallel ranging. The bandwidth of each channel exceeds 10 GHz, leading to a ranging resolution better than 1 cm. Our parallel random LiDAR is robust to cross-channel interference, and will facilitate high-speed 3D sensing and imaging.

Conference Presentation

Citation Download Citation

Hui Cao "Parallel random LiDAR with spatial multiplexing", Proc. SPIE PC12912, Quantum Sensing, Imaging, and Precision Metrology II, PC1291236 (13 March 2024); https://doi.org/10.1117/12.3011732

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