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Proceedings Paper

Analytic modeling and explanation of ultra-low noise in dense SWIR detector arrays
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Paper Abstract

InGaAs-based focal plane arrays are an unrivaled uncooled SWIR technology. Prior analytical models of InGaAs have been inaccurate at predicting the ultimate dark current limits for tight-pitch arrays. By going back to first-principles, we have developed an improved analytic model. This model clarifies how tight pitch arrays suppress diffusion current and why bulk generation-recombination is not a limiting factor in today's devices. We can thus explain our experimental arrays with dark currents of 0.5nA/cm2 at 20C and <0.1nA/cm2 at 7C as well why we believe another order of magnitude decrease in dark current is theoretically possible.

Paper Details

Date Published: 21 May 2011
PDF: 12 pages
Proc. SPIE 8012, Infrared Technology and Applications XXXVII, 80121Y (21 May 2011); doi: 10.1117/12.884118
Show Author Affiliations
John A. Trezza, Sensors Unlimited, Inc., part of Goodrich Corp. (United States)
Navneet Masaun, Sensors Unlimited, Inc., part of Goodrich Corp. (United States)
Martin Ettenberg, Sensors Unlimited, Inc., part of Goodrich Corp. (United States)


Published in SPIE Proceedings Vol. 8012:
Infrared Technology and Applications XXXVII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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