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Article

Fast-Gated 16 × 1 SPAD Array for Non-Line-of-Sight Imaging Applications

1
Dipartimento di Elettronica, Informazione e Bioingegneria (DEIB), Politecnico di Milano, I-20133 Milan, Italy
2
Computational Optics Group, University of Wisconsin—Madison, Madison, WI 53706, USA
*
Author to whom correspondence should be addressed.
Instruments 2020, 4(2), 14; https://doi.org/10.3390/instruments4020014
Received: 12 April 2020 / Revised: 15 May 2020 / Accepted: 22 May 2020 / Published: 25 May 2020
(This article belongs to the Special Issue Single-Photon Detection Instrumentation and Applications)
In this paper we present a novel single-photon detector specifically designed for Non-Line-Of-Sight (NLOS) imaging applications within the framework of the DARPA REVEAL program. The instrument is based on a linear 16 × 1 Complementary Metal-Oxide-Semiconductor (CMOS) Single-Photon Avalanche Diode (SPAD) array operated in fast-gated mode by a novel fast-gating Active Quenching Circuit (AQC) array, which enables the detectors with sub-ns transitions thanks to a SPAD-dummy approach. The detector exhibits a timing resolution better than 50 ps (Full Width at Half Maximum - FWHM) at a measurement repetition rate up to 40 MHz, and provides 16 independent outputs compatible with commercial Time-Correlated Single-Photon Counting (TCSPC) instrumentation. The instrument has been experimentally characterized and operated in preliminary NLOS imaging acquisitions where a 40 × 60 cm hidden object is successfully reconstructed by scanning over a grid of 150 × 150 positions. View Full-Text
Keywords: SPAD array; fast-gated; Non-Line-Of-Sight (NLOS); single-photon; Time-Of-Flight (TOF) SPAD array; fast-gated; Non-Line-Of-Sight (NLOS); single-photon; Time-Of-Flight (TOF)
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MDPI and ACS Style

Renna, M.; Nam, J.H.; Buttafava, M.; Villa, F.; Velten, A.; Tosi, A. Fast-Gated 16 × 1 SPAD Array for Non-Line-of-Sight Imaging Applications. Instruments 2020, 4, 14. https://doi.org/10.3390/instruments4020014

AMA Style

Renna M, Nam JH, Buttafava M, Villa F, Velten A, Tosi A. Fast-Gated 16 × 1 SPAD Array for Non-Line-of-Sight Imaging Applications. Instruments. 2020; 4(2):14. https://doi.org/10.3390/instruments4020014

Chicago/Turabian Style

Renna, Marco, Ji Hyun Nam, Mauro Buttafava, Federica Villa, Andreas Velten, and Alberto Tosi. 2020. "Fast-Gated 16 × 1 SPAD Array for Non-Line-of-Sight Imaging Applications" Instruments 4, no. 2: 14. https://doi.org/10.3390/instruments4020014

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