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Proceedings Paper

Hypervelocity time-of-flight characterisation of a 14GS/s histogramming CMOS SPAD sensor
Author(s): Neil Finlayson; Tarek Al Abbas; Francescopaolo Mattioli Della Rocca; Oscar Almer; Salvatore Gnecchi; Neale A. W. Dutton; Robert K. Henderson
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Paper Abstract

We present Time-of-Flight (TOF) distance, velocity and acceleration characterisation of a multi-event Time-to-Digital- Converter (TDC) optical sensor featuring a 32x32 Single Photon Avalanche Diode (SPAD) array, a 14 GS/s TDC and on-chip histogram generation. Events are continuously recorded on-chip in 264 70 ps-wide histogram bins. High TDC throughput enables the device to be operated in Doppler mode with pulse-trains moving at hypervelocity speeds relative to the operational sensor frequency. Electrical frequency-detuned signals of 50 kHz are resolved by the TDC module. Optical frequency-detuned signals of 1 kHz are resolved, corresponding to a TOF velocity resolution of 15.8 km/s. Linear, sine-wave, and chirp frequency modulation techniques are used to demonstrate these characteristics.

Paper Details

Date Published: 27 January 2017
PDF: 13 pages
Proc. SPIE 10111, Quantum Sensing and Nano Electronics and Photonics XIV, 101112Z (27 January 2017); doi: 10.1117/12.2252271
Show Author Affiliations
Neil Finlayson, The Univ. of Edinburgh (United Kingdom)
Tarek Al Abbas, The Univ. of Edinburgh (United Kingdom)
Francescopaolo Mattioli Della Rocca, The Univ. of Edinburgh (United Kingdom)
Oscar Almer, The Univ. of Edinburgh (United Kingdom)
Salvatore Gnecchi, SensL Technologies Ltd. (Ireland)
Neale A. W. Dutton, STMicroelectronics Ltd. (United Kingdom)
Robert K. Henderson, The Univ. of Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 10111:
Quantum Sensing and Nano Electronics and Photonics XIV
Manijeh Razeghi, Editor(s)

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