What is SPAD (single-photon avalanche diode)?
A photodetector biased above breakdown so that even a single photon triggers a large avalanche pulse. It is used for ranging, such as in LiDAR.
SPAD (single-photon avalanche diode) in the explanations
APDs are used in optical-communication receivers and LiDAR, and in Geiger mode (SPAD), biased above breakdown, even a single photon produces a large pulse, used in ranging and quantum optics.
Which is a characteristic of an avalanche photodiode (APD)?A SPAD operates above breakdown (Geiger mode), so even one photon-generated electron triggers an avalanche producing a large current pulse.
Which light detector is operated with a reverse bias above …
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Related terms
Photodiode Backside illumination (BSI) Bayer pattern CCD image sensor CMOS image sensor Correlated double sampling (CDS) Dark current Fixed-pattern noise Full-well capacity Global shutter