arXiv:2011.05313physics.app-ph
Understanding the physics of coherent LiDAR
Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.
Abstract
Coherent LiDAR (Light Detecting And Ranging) is a promising 3D imaging technology that provides significant advantages over more traditional LiDAR systems. In addition to being immune to ambient light, it directly measures the velocity of moving objects by sensing Doppler shift of light, and can achieve exceptional depth accuracies. The goal of this manuscript is to explain the basic physics of coherent LiDAR with rigorous derivations from first principles. We first discuss the sensitivity of coherent detection, and derive the number of photons needed to robustly detect a LiDAR return. We then turn our attention to the collection efficiency of coherent LiDAR, and show that signal strength is strongly dependent upon how well the laser beams are focused.
While not an integrated system itself, looking for convenient information on the matter I stumbled upon https://arxiv.org/abs/2011.05313 . As for integrated electro-optical hardware that does coherent optics, I'd like to point at SFP optics; the ones that are sufficiently…
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