Distortions from multi-photon triggering in a single CMOS SPAD

Matthew W. Fishburn; Edoardo Charbon

doi:10.1117/12.918397

22 May 2012 Distortions from multi-photon triggering in a single CMOS SPAD

Matthew W. Fishburn, Edoardo Charbon

Proceedings Volume 8375, Advanced Photon Counting Techniques VI; 83750O (2012) https://doi.org/10.1117/12.918397
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

Motivated by the need for correct characterization and operation of single-photon avalanche diodes (SPADs), three methods for discriminating between single- and multi-photon triggering in a single CMOS SPAD are compared. The first method, utilizing a measurement of the avalanche's quench time, correctly distinguishes between avalanches initiated by one photon or 100 incident photons with p > 0.80 in single-shot measurements. The second method, which modulates the detector efficiency, correctly distinguished streams of pulses with single photons or 100 photons with p > 0.99, but is unable to provide a single-shot measurement. The third method, which examines distortions to the timing jitter's diffusion tail, requires knowledge of the incident timing jitter a priori and is unlikely to be useful in most systems. All compared methods are independent of one another, and show promise for distinguishing how many photons seed an avalanche.

Citation Download Citation

Matthew W. Fishburn and Edoardo Charbon "Distortions from multi-photon triggering in a single CMOS SPAD", Proc. SPIE 8375, Advanced Photon Counting Techniques VI, 83750O (22 May 2012); https://doi.org/10.1117/12.918397

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