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Single-Photon Counters

Photonics Spectra
Apr 2011
AUREA TechnologyRequest Info
 
Aurea Technology has unveiled its SPD_A_M2 family of ultralow-noise, high-quantum-efficiency near-infrared (900 to 1700 nm) single-photon detectors. Their Geiger-mode InGaAs avalanche photodiode and thermoelectric cooler ensure high detection efficiency, a low and stable dark count, high speed and low jitter, with a performance superior to 5 x 10–6 per nanosecond. They exhibit good sensitivity in high-level detection, making them more effective than photomultipliers and microchannel plate photomultipliers, according to the company. Quantum efficiency is adjustable from 5% up to 25%. The RoHS-compliant devices provide plug-and-play connection to PCs via a USB interface, allowing users to easily adjust detection efficiency and to tune gate width and delay. They are supplied with a graphical user interface.


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GLOSSARY
fluorescence
The emission of light or other electromagnetic radiation of longer wavelengths by a substance as a result of the absorption of some other radiation of shorter wavelengths, provided the emission continues only as long as the stimulus producing it is maintained. In other words, fluorescence is the luminescence that persists for less than about 10-8 s after excitation.
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