Detection Statistics in Geiger-Mode Avalanche Photodiode Quad-Cell Arrays With Crosstalk and Dead Time

The detection statistics of Geiger-mode photodetector subarrays with a combination of reset-time blocking loss and optical crosstalk are investigated. Closed-form expressions are obtained for the means and covariances of the numbers of counts in 2 × 2 subarrays (quad cells) used in Shack-Hartmann wa...

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Bibliographic Details
Published in:IEEE sensors journal 2015-04, Vol.15 (4), p.2133-2143
Main Authors: Aull, Brian F., Reich, Robert K., Ward, Christopher M., Craig, David M., Young, Douglas J., Johnson, Robert L.
Format: Article
Language:English
Subjects:
adaptive optics
Clocks
Crosstalk
Detectors
Geiger-mode avalanche photodiodes
Noise
Photonics
Vectors
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Summary:The detection statistics of Geiger-mode photodetector subarrays with a combination of reset-time blocking loss and optical crosstalk are investigated. Closed-form expressions are obtained for the means and covariances of the numbers of counts in 2 × 2 subarrays (quad cells) used in Shack-Hartmann wavefront sensors. The predicted wavefront sensing precision is compared with that obtained with a charge-coupled device-based wavefront sensor with readout noise. The results of the theory are also used to predict photon transfer curves for the Geiger-mode device and these are compared with experiment.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2014.2367235