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Proceedings Paper

CMOS Geiger-mode avalanche photodiode detectors for time and intensity resolved measurements
Author(s): William G. Lawrence; Tani Tozian; Christopher Stapels; James F. Christian; Gregory D. Derderian; Jeffrey P. Derderian; Gyula Varadi
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Paper Abstract

Geiger-mode avalanche photodiode detectors are produced using standard CMOS fabrication methods. We have produced integrated circuits that include the Geiger-mode photodetector and digital signal processing circuits. Our current design includes sixteen photon counting detector elements, with bias control, active quenching circuits, and integrated counters at each pixel. The detectors are used to measure chemiluminescence from horseradish peroxidase conjugated antibodies in sub-microliter samples using an optical waveguide. The detector array has been coupled with an external field programmable gate array (FPGA) to perform multi-channel, all digital, time resolved fluorescence measurements of quantum dot nanoparticles and the pH dependence of the fluorescence lifetime of fluorescein dye.

Paper Details

Date Published: 17 February 2010
PDF: 12 pages
Proc. SPIE 7594, MOEMS and Miniaturized Systems IX, 75940I (17 February 2010); doi: 10.1117/12.839239
Show Author Affiliations
William G. Lawrence, Radiation Monitoring Devices Inc. (United States)
Tani Tozian, Radiation Monitoring Devices Inc. (United States)
Christopher Stapels, Radiation Monitoring Devices Inc. (United States)
James F. Christian, Radiation Monitoring Devices Inc. (United States)
Gregory D. Derderian, Dipole Engineering (United States)
Jeffrey P. Derderian, Dipole Engineering (United States)
Gyula Varadi, Radiation Monitoring Devices Inc. (United States)


Published in SPIE Proceedings Vol. 7594:
MOEMS and Miniaturized Systems IX
Harald Schenk; Wibool Piyawattanametha, Editor(s)

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