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Proceedings Paper

Low-Light-Level InGaAs focal plane arrays with and without illumination
Author(s): Michael MacDougal; Jon Geske; Chad Wang; David Follman
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Paper Abstract

Short wavelength IR imaging using InGaAs-based FPAs is shown. Aerius demonstrates low dark current in InGaAs detector arrays with 15 μm pixel pitch. The same material is mated with a 640x 512 CTIA-based readout integrated circuit. The resulting FPA is capable of imaging photon fluxes with wavelengths between 1 and 1.6 microns at low light levels. The mean dark current density on the FPAs is extremely low at 0.64 nA/cm2 at 10°C. Noise due to the readout can be reduced from 95 to 57 electrons by using off-chip correlated double sampling (CDS). In addition, Aerius has developed laser arrays that provide flat illumination in scenes that are normally light-starved. The illuminators have 40% wall-plug efficiency and provide speckle-free illumination, provide artifact-free imagery versus conventional laser illuminators.

Paper Details

Date Published: 3 May 2010
PDF: 8 pages
Proc. SPIE 7660, Infrared Technology and Applications XXXVI, 76600K (3 May 2010); doi: 10.1117/12.852605
Show Author Affiliations
Michael MacDougal, Aerius Photonics, LLC (United States)
Jon Geske, Aerius Photonics, LLC (United States)
Chad Wang, Aerius Photonics, LLC (United States)
David Follman, Aerius Photonics, LLC (United States)

Published in SPIE Proceedings Vol. 7660:
Infrared Technology and Applications XXXVI
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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