engleski

A Novel Avalanche Photodiode for Single Photon Detection in VIS-NIR range

In this work we investigate operation in the Geiger mode of the new avalanche photo diode (APD) SAP500 manufactured by Laser Components. This APD is sensitive in the range 400-1000nm and has a conventional reach-through structure which ensures good quantum efficiency at the long end of the spectrum. By use of an active quenching scheme, we have tested the dependences of breakdown voltage, detection efficiency (Fig.1), timing jitter and noise (dark counts) as functions of the active layer thickness. Our results indicate an excellent overall performance which can be further optimized for a specific application by simply choosing of an appropriate thickness. Finally, we compare this diode to the ”standard” C30902SH from Perkin Elmer.

single photon detection ; avalanche photodiode

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