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Proceedings Paper

CMOS Geiger photodiode array with integrated signal processing for imaging of 2D objects using quantum dots
Author(s): Christopher J. Stapels; William G. Lawrence; Rajan S. Gurjar; Erik B. Johnson; James F. Christian
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Paper Abstract

Geiger-mode photodiodes (GPD) act as binary photon detectors that convert analog light intensity into digital pulses. Fabrication of arrays of GPD in a CMOS environment simplifies the integration of signal-processing electronics to enhance the performance and provide a low-cost detector-on-a-chip platform. Such an instrument facilitates imaging applications with extremely low light and confined volumes. High sensitivity reading of small samples enables twodimensional imaging of DNA arrays and for tracking single molecules, and observing their dynamic behavior. In this work, we describe the performance of a prototype imaging detector of GPD pixels, with integrated active quenching for use in imaging of 2D objects using fluorescent labels. We demonstrate the integration of on-chip memory and a parallel readout interface for an array of CMOS GPD pixels as progress toward an all-digital detector on a chip. We also describe advances in pixel-level signal processing and solid-state photomultiplier developments.

Paper Details

Date Published: 26 August 2008
PDF: 9 pages
Proc. SPIE 7055, Infrared Systems and Photoelectronic Technology III, 70550S (26 August 2008); doi: 10.1117/12.796329
Show Author Affiliations
Christopher J. Stapels, Radiation Monitoring Devices (United States)
William G. Lawrence, Radiation Monitoring Devices (United States)
Rajan S. Gurjar, Radiation Monitoring Devices (United States)
Erik B. Johnson, Radiation Monitoring Devices (United States)
James F. Christian, Radiation Monitoring Devices (United States)

Published in SPIE Proceedings Vol. 7055:
Infrared Systems and Photoelectronic Technology III
Eustace L. Dereniak; Randolph E. Longshore; Ashok K. Sood; John P. Hartke; Paul D. LeVan, Editor(s)

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