Development and testing of a 1024x1024 pixel Si:As IBC detector for SOFIA-like applications

Kimberly A. Ennico; Thomas P. Greene; Craig R. McCreight; Mark E. McKelvey; Robert E. McMurray Jr.; Jerry R. Cripe

doi:10.1117/12.458580

3 March 2003 Development and testing of a 1024×1024 pixel Si:As IBC detector for SOFIA-like applications

Kimberly A. Ennico, Thomas P. Greene, Craig R. McCreight, Mark E. McKelvey, Robert E. McMurray Jr., Jerry R. Cripe

Proceedings Volume 4857, Airborne Telescope Systems II; (2003) https://doi.org/10.1117/12.458580
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

Airborne and space telescope astronomical observations in the 5-25 micron wavelength region are critical for understanding the physical conditions, composition, chemistry, and excitation of many environments in the interstellar medium, external galaxies, solar system objects, extra-solar systems, and stars. The scientific impact is particularly unique in the 5-8 micron and 14-25 micron regions which are inaccessible or poorly observed from ground-based observatories. Large format mid-infrared detectors sensitive over these wavelengths and operable under moderate backgrounds (~10⁶ photons/s/pixel at R=2000, at 10 microns) are essential for efficient large-area survey imaging and for taking moderate resolution spectra over a large spectral range. Both SOFIA and passively cooled Explorer observatories could benefit from this technology. Current first-light SOFIA instruments use small-format mid-infrared focal plane arrays of sizes 256 × 256 pixels. With the collaboration of Raytheon Infrared Operations, NASA-Ames Research Center has developed and tested the first 1024 × 1024 mid-infrared device suitable for operating under moderate backgrounds: a combination of the ALADDIN III readout multiplexer, cryo-processed for 6 K operation, with Si:As IBC detector material designed for high QE. This device has exhibited low dark current, moderate noise levels, and > 200,000 electron linear well size at 6 K operation. We conclude with suggestions for future device development for optimal performance under moderate background, SOFIA- and low Earth orbit observing conditions.

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Kimberly A. Ennico, Thomas P. Greene, Craig R. McCreight, Mark E. McKelvey, Robert E. McMurray Jr., and Jerry R. Cripe "Development and testing of a 1024×1024 pixel Si:As IBC detector for SOFIA-like applications", Proc. SPIE 4857, Airborne Telescope Systems II, (3 March 2003); https://doi.org/10.1117/12.458580

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KEYWORDS

Sensors

Multiplexers

Readout integrated circuits

Mid-IR

Quantum efficiency

Detector development

Infrared detectors

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