Hypervelocity Time-of-Flight Characterisation of a 14GS/s Histogramming CMOS SPAD Sensor

Neil Finlayson, Tarek Al abbas, Francescopaolo Mattioli Della Rocca, Oscar Almer, Salvatore Gnecchi, Neale Dutton, Robert Henderson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

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.
Original languageEnglish
Title of host publicationProceedings of the SPIE
Subtitle of host publicationQuantum Sensing and Nano Electronics and Photonics XIV
ISBN (Print)9781510606630
Publication statusPublished - 27 Jan 2017


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