Title :
Detection Statistics in Geiger-Mode Avalanche Photodiode Quad-Cell Arrays With Crosstalk and Dead Time
Author :
Aull, Brian F. ; Reich, Robert K. ; Ward, Christopher M. ; Craig, David M. ; Young, Douglas J. ; Johnson, Robert L.
Author_Institution :
MIT Lincoln Lab., Lexington, MA, USA
Abstract :
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.
Keywords :
avalanche photodiodes; optical crosstalk; photodetectors; sensor arrays; wavefront sensors; GMAPD; Geiger-mode avalanche photodiode quad-cell array; Geiger-mode device; Geiger-mode photodetector subarray; Shack-Hartmann wavefront sensors; detection statistics; optical crosstalk; photon transfer curve prediction; reset-time blocking loss; Clocks; Crosstalk; Detectors; Noise; Photonics; Vectors; Geiger-mode avalanche photodiodes; Geiger-mode avalanche photodiodes,; adaptive optics;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2014.2367235
