SPAD and SPAD Arrays: Theory, Practice, and Applications

This webinar was originally held on January 22, 2025.
Now available for On Demandviewing!
Duration: 1 hour
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Summary
Single photon avalanche photodiodes (SPADs) are an emerging photon-counting technology. Their 1D or 2D array form offers several advantages over traditional imaging with CCDs and CMOS. Most importantly, a pixel in a SPAD array can provide not only intensity information but also the arrival times of individual photons. Because of this unique capability, there is great interest in using SPADs and SPAD arrays in low-light applications requiring precise timing, such as time-of-flight lidar or fluorescence lifetime imaging.
The webinar begins with a discussion of the fundamentals of SPAD physics, followed by a comprehensive overview of possible SPAD pixel designs and architectures for 1D and 2D SPAD arrays. Topics such as dynamic range, noise, readout, quenching, and signal processing will be examined in this section. Subsequently, several applications utilizing SPADs or SPAD arrays will be reviewed, emphasizing the advantages of SPADs over more traditional detectors. The presentation concludes with an overview of the most recent developments in SPAD technologies by Hamamatsu and others.
Speakers
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