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Measuring optical power with single-photon detectors

Light from a pulsed laser is directed through a variable attenuator onto a transition edge sensor device.

Light from a pulsed laser (a) is directed through a variable attenuator (b) onto a transition edge sensor device (c). The resulting signal (d) is analyzed with a statistical clustering algorithm (e) which returns a nominal photon number (f).

October 2015 • NIST • https://www.nist.gov/news-events/news/2015/10/measuring-optical-power-single-photon-detectors • Tagged: Illustration, Diagrams