Two-photon interference LiDAR imaging

Murray, R. and Lyons, A. (2022) Two-photon interference LiDAR imaging. Optics Express, 30(15), pp. 27164-27170. (doi: 10.1364/OE.461248) (PMID:36236893)

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Optical Coherence Tomography (OCT) is a key 3D imaging technology that provides micron scale depth resolution for bio-imaging. This resolution substantially surpasses what it typically achieved in Light Detection and Ranging (LiDAR) which is often limited to the millimetre scale due to the impulse response of the detection electronics. However, the lack of coherence in LiDAR scenes, arising from mechanical motion for example, make OCT practically infeasible. Here we present a quantum interference inspired approach to LiDAR which achieves OCT depth resolutions without the need for high levels of stability. We demonstrate depth imaging capabilities with an effective impulse response of 70 μm, thereby allowing ranging and multiple reflections to be discerned with much higher resolution than conventional LiDAR approaches. This enhanced resolution opens up avenues for LiDAR in 3D facial recognition, and small feature detection/tracking as well as enhancing the capabilities of more complex time-of-flight methods such as imaging through obscurants and non-line-of-sight imaging.

Item Type:Articles
Additional Information:Funding: Engineering and Physical Sciences Research Council (EP/R030081/1); Royal Academy of Engineering (RF\202021\20\329).
Glasgow Author(s) Enlighten ID:Lyons, Dr Ashley
Authors: Murray, R., and Lyons, A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN (Online):1094-4087
Published Online:13 July 2022
Copyright Holders:Copyright © 2022 The Authors
First Published:First published in Optics Express 30(15):27164-27170
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
301688Nano-scale imaging with Hong-Ou-Mandel InterferometryDaniele FaccioEngineering and Physical Sciences Research Council (EPSRC)EP/R030081/1P&S - Physics & Astronomy