Title :
A SPAD-based pixel linear array for high-speed time-gated fluorescence lifetime imaging
Author :
Pancheri, Lucio ; Stoppa, David
Author_Institution :
Fondazione Bruno Kessler (FBK), Trento, Italy
Abstract :
A monolithic 64-pixel linear array for Fluorescence Lifetime Imaging applications is presented. Each pixel includes four actively quenched Single Photon Avalanche Diodes, four gated 8-bit counters and is capable of measuring single and double exponential decays. The array has a 34% fill factor, a maximum throughput rate of 320 Mbps, and has been tested up to 40 MHz laser repetition rate. Preliminary fluorescence measurements have been performed obtaining a 6% lifetime precision in 660 mus accumulation time and a very good uniformity among the pixels.
Keywords :
avalanche diodes; image sensors; photodetectors; photodiodes; time resolved spectra; actively quenched; exponential decays; fluorescence measurements; high-speed time-gated fluorescence lifetime imaging; laser repetition rate; maximum throughput rate; pixel linear array; single photon avalanche diodes; Counting circuits; Diodes; Fluorescence; Optical arrays; Performance evaluation; Pixel; Semiconductor laser arrays; Testing; Throughput; Time measurement;
Conference_Titel :
ESSCIRC, 2009. ESSCIRC '09. Proceedings of
Conference_Location :
Athens
Print_ISBN :
978-1-4244-4354-3
DOI :
10.1109/ESSCIRC.2009.5325948
