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20 January 2012 World's first demonstration of type-II superlattice dual band 640x512 LWIR focal plane array
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Abstract
High resolution multi-band infrared detection of terrestrial objects is useful in applications such as long range and high altitude surveillance. In this paper, we present a 640 by 512 type-II superlattice focal plane array (FPA) in the long-wave infrared (LWIR) suitable for such purposes, featuring 100% cutoff wavelengths at 9.5μm (blue channel) and 13μm (red). The dual band camera is single-bump hybridized to an Indigo 30μm pitch ISC0905 read-out integrated circuit. Test pixels revealed background limited behavior with specific detectivities as high as ~5x1011 Jones at 7.9μm (blue) and ~1x1011 Jones at 10.2μm (red) at 77K.
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Edward Kwei-wei Huang and Manijeh Razeghi "World's first demonstration of type-II superlattice dual band 640x512 LWIR focal plane array", Proc. SPIE 8268, Quantum Sensing and Nanophotonic Devices IX, 82680Z (20 January 2012); https://doi.org/10.1117/12.913662
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