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About: Photon counting     Goto   Sponge   NotDistinct   Permalink

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Type: topical conceptyago:WikicatParticleDetectorsyago:Area102735688yago:Artifact100021939yago:Chamber103003730yago:Enclosure103285912yago:Object100002684yago:ParticleDetector103894051yago:PhysicalEntity100001930yago:YagoGeoEntityyago:YagoPermanentlyLocatedEntityyago:Structure104341686yago:Whole100003553 New Facet based on Instances of this Class

Photon counting is a technique in which individual photons are counted using a single-photon detector (SPD). A single-photon detector emits a pulse of signal for each detected photon, in contrast to a normal photodetector, which generates an analog signal proportional to the photon flux. The number of pulses (but not their amplitude) is counted, giving an integer number of photons detected per measurement interval. The counting efficiency is determined by the quantum efficiency and the system's electronic losses.