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Single-Photon Detection

Nov 2009
ID QuantiqueRequest Info
id_Quantique.jpgFor its id201 single-photon-detection module at near-infrared wavelengths, id Quantique SA has announced a reduced noise level. The hermetically sealed diode, suitable for use in ambient light, consists of certified InGaAs and InP photodiodes, features an adjustable detection probability up to 25%, adjustable gate width from 2.5 to 100 ns, adjustable dead time up to 100 μs, and a tunable delay between 0 and 25 ns. A variety of trigger options is available from up to 1 MHz for internal and 8 MHz for external.


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ambient light
Light present in the environment around a detecting or interpreting device, especially a machine vision system, and generated from outside sources. Such light must be treated as noise by the vision system.
The unwanted and unpredictable fluctuations that distort a received signal and hence tend to obscure the desired message. Noise disturbances, which may be generated in the devices of a communications system or which may enter the system from the outside, limit the range of the system and place requirements on the signal power necessary to ensure good reception.
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