Parallel random LiDAR with spatial multiplexing of a many-mode laser
Optics
2023-03-27 v2
Abstract
We propose and experimentally demonstrate parallel 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.
Cite
@article{arxiv.2301.09781,
title = {Parallel random LiDAR with spatial multiplexing of a many-mode laser},
author = {Kyungduk Kim and Yaniv Eliezer and Olivier Spitz and Hui Cao},
journal= {arXiv preprint arXiv:2301.09781},
year = {2023}
}
Comments
12 pages, 7 figures