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Proceedings Paper

High-performance InP Geiger-mode SWIR avalanche photodiodes
Author(s): Ping Yuan; Rengarajan Sudharsanan; Joseph Boisvert; Xiaogang Bai; Paul McDonald; Takahiro Isshiki; William Hong; Michael Salisbury; Chong Hu; Mingguo Liu; Joe C Campbell
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Paper Abstract

LAser Detection And Ranging (LADAR) is a promising tool for precise 3D-imaging, which enables field surveillance and target identification under low-light-level conditions in many military applications. For the time resolution and sensitivity requirements of LADAR applications, InGaAsP/InP Geiger-mode (GM) avalanche photodiodes (APDs) excel in the spectrum band between 1.0~1.6 μm. Previously MIT Lincoln Laboratory has demonstrated 3D LADAR imaging in the visible and near infrared (1.06 μm) wavelengths with InP/InGaAsP GM-APD arrays. In order to relieve the design tradeoffs among dark count rate (DCR), photo detection efficiency (PDE), afterpulsing, and operating temperature, it is essential to reduce the DCR while maintaining a high PDE. In this paper we will report the progress of GM-APD detectors and arrays with low DCR and high PDE at 1.06 μm. In order to improve both DCR and PDE, we optimized the multiplication layer thickness, substrate, and epitaxial growth quality. With an optimized InP multiplier thickness, a DCR as low as 100 kHz has been demonstrated at 4V overbias at 300 °C. and at 240 K, less than 1 kHz DCR is measured. A nearly 40% PDE can be achieved at a DCR of 10 kHz at the reduced temperature.

Paper Details

Date Published: 29 April 2009
PDF: 9 pages
Proc. SPIE 7320, Advanced Photon Counting Techniques III, 73200P (29 April 2009); doi: 10.1117/12.821284
Show Author Affiliations
Ping Yuan, Spectrolab, Inc. (United States)
Rengarajan Sudharsanan, Spectrolab, Inc. (United States)
Joseph Boisvert, Spectrolab, Inc. (United States)
Xiaogang Bai, Spectrolab, Inc. (United States)
Paul McDonald, Spectrolab, Inc. (United States)
Takahiro Isshiki, Spectrolab, Inc. (United States)
William Hong, Spectrolab, Inc. (United States)
Michael Salisbury, Boeing-SVS, Inc. (United States)
Chong Hu, University of Virginia (United States)
Mingguo Liu, University of Virginia (United States)
Joe C Campbell, University of Virginia (United States)


Published in SPIE Proceedings Vol. 7320:
Advanced Photon Counting Techniques III
Mark A. Itzler; Joe C. Campbell, Editor(s)

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