Picosecond time-resolved imaging using SPAD cameras

Gariepy, G., Leach, J., Warburton, R., Chan, S., Henderson, R. and Faccio, D. (2016) Picosecond time-resolved imaging using SPAD cameras. Proceedings of SPIE, 9992, 99920N. (doi: 10.1117/12.2241184)

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The recent development of 2D arrays of single-photon avalanche diodes (SPAD) has driven the development of applications based on the ability to capture light in motion. Such arrays are composed typically of 32x32 SPAD detectors, each having the ability to detect single photons and measure their time of arrival with a resolution of about 100 ps. Thanks to the single-photon sensitivity and the high temporal resolution of these detectors, it is now possible to image light as it is travelling on a centimetre scale. This opens the door for the direct observation and study of dynamics evolving over picoseconds and nanoseconds timescales such as laser propagation in air, laser-induced plasma and laser propagation in optical fibres. Another interesting application enabled by the ability to image light in motion is the detection of objects hidden from view, based on the recording of scattered waves originating from objects hidden by an obstacle. Similarly to LIDAR systems, the temporal information acquired at every pixel of a SPAD array, combined with the spatial information it provides, allows to pinpoint the position of an object located outside the line-of-sight of the detector. A non-line-of-sight tracking can be a valuable asset in many scenarios, including for search and rescue mission and safer autonomous driving.

Item Type:Articles
Additional Information:Conference: Emerging Imaging and Sensing Technologies, Edinburgh, 28/09/16 → 29/09/16.
Glasgow Author(s) Enlighten ID:Faccio, Professor Daniele and Leach, Mr Jonathan
Authors: Gariepy, G., Leach, J., Warburton, R., Chan, S., Henderson, R., and Faccio, D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Proceedings of SPIE
Publisher:Society of Photo-optical Instrumentation Engineers (SPIE)
ISSN (Online):1996-756X
Copyright Holders:Copyright © 2016 SPIE
First Published:First published in Proceeedings of SPIE 9992:99920N
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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