Open AccessTwo-Dimensional SPAD Imaging Camera for Photon Counting
Author(s) -
Fabrizio Guerrieri,
Simone Tisa,
Alberto Tosi,
Franco Zappa
Publication year - 2010
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2010.2066554
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
Many demanding photonic applications require the acquisition of images at very low light-level conditions and at high speed. Advanced imagers available on the market are generally not able to provide both performances in one detector. We present a 2-D imager based on a 32 × 32 array of “smart pixels,” each comprising a single-photon avalanche diode detector, an analog front end, and a digital processing electronics, which provides single-photon sensitivity, high electronic noise immunity, and high readout speed. The imager can be operated at a maximum of about 100 000 frame/s with negligible blind time between frames, provides high Photon-Detection Efficiency in the visible range and dynamic range, and low Dark-Counting Rate, even at room temperature. To easily integrate the imager into different applications, we developed a complete single-photon camera system, which fully operates the array simply through a USB 2.0 link and user-friendly software to configure camera parameters and operating modalities, as well as to perform readout.