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

John A. Trezza; Navneet Masaun; Martin Ettenberg

doi:10.1117/12.884118

20 May 2011 Analytic modeling and explanation of ultra-low noise in dense SWIR detector arrays

John A. Trezza, Navneet Masaun, Martin Ettenberg

Proceedings Volume 8012, Infrared Technology and Applications XXXVII; 80121Y (2011) https://doi.org/10.1117/12.884118
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

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.

Citation Download Citation

John A. Trezza, Navneet Masaun, and Martin Ettenberg "Analytic modeling and explanation of ultra-low noise in dense SWIR detector arrays", Proc. SPIE 8012, Infrared Technology and Applications XXXVII, 80121Y (20 May 2011); https://doi.org/10.1117/12.884118

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