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Proceedings Paper

Recent advances in very large area avalanche photodiodes
Author(s): Michael R. Squillante; James Christian; Gerald Entine; Richard Farrell; Arieh M. Karger; Mickel McClish; Richard Myers; Kanai S. Shah; David Taylor; Kofi Vanderpuye; Peter Waer; Mitchell Woodring
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Paper Abstract

The Avalanche Photodiode (APD) is a unique device that combines the advantages of solid state photodetectors with those of high gain devices such as photomultiplier tubes (PMTs). APDs have internal gain that provides a high signal-to-noise ratio. APDs have high quantum efficiency, are fast, compact, and rugged. These properties make them suitable detectors for important applications such as LADAR, detection and identification toxic chemicals and bio-warfare agents, LIDAR fluorescence detection, stand-off laser induced breakdown spectroscopy (LIBS), and nuclear detectors and imagers. Recently there have been significant technical breakthroughs in fabricating very large APDs, APD arrays, and position sensitive APD arrays (PSAPD). Signal gain of over 10,000 has been achieved, single element APDs have been fabricated with active area greater than 40 cm2, monolithic pixelated arrays with up to 28 x 28 elements have been fabricated, and position sensitive APDs have been developed and tested. Additionally, significant progress has been made in improving the fabrication process to provide better uniformity and high yield, permitting cost effective manufacturing of APDs for reduced cost.

Paper Details

Date Published: 22 September 2003
PDF: 6 pages
Proc. SPIE 5071, Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Defense and Law Enforcement II, (22 September 2003); doi: 10.1117/12.517444
Show Author Affiliations
Michael R. Squillante, Radiation Monitoring Devices, Inc. (United States)
James Christian, Radiation Monitoring Devices, Inc. (United States)
Gerald Entine, Radiation Monitoring Devices, Inc. (United States)
Richard Farrell, Radiation Monitoring Devices, Inc. (United States)
Arieh M. Karger, Radiation Monitoring Devices, Inc. (United States)
Mickel McClish, Radiation Monitoring Devices, Inc. (United States)
Richard Myers, Radiation Monitoring Devices, Inc. (United States)
Kanai S. Shah, Radiation Monitoring Devices, Inc. (United States)
David Taylor, Radiation Monitoring Devices, Inc. (United States)
Kofi Vanderpuye, Radiation Monitoring Devices, Inc. (United States)
Peter Waer, Radiation Monitoring Devices, Inc. (United States)
Mitchell Woodring, Radiation Monitoring Devices, Inc. (United States)


Published in SPIE Proceedings Vol. 5071:
Sensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Defense and Law Enforcement II
Edward M. Carapezza, Editor(s)

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