Demonstration of 1024x1024 pixel dual-band QWIP focal plane array

S. D. Gunapala; S. V. Bandara; J. K. Liu; J. M. Mumolo; D. Z. Ting; C. J. Hill; J. Nguyen; S. B. Rafol

doi:10.1117/12.851175

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3 May 2010 Demonstration of 1024x1024 pixel dual-band QWIP focal plane array

S. D. Gunapala, S. V. Bandara, J. K. Liu, J. M. Mumolo, D. Z. Ting, C. J. Hill, J. Nguyen, S. B. Rafol

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Proceedings Volume 7660, Infrared Technology and Applications XXXVI; 76603L (2010) https://doi.org/10.1117/12.851175
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

QWIPs are well known for their stability, high pixel-pixel uniformity and high pixel operability which are quintessential parameters for large area imaging arrays. In this paper we report the first demonstration of the megapixel-simultaneously-readable and pixel-co-registered dual-band QWIP focal plane array (FPA). The dual-band QWIP device was developed by stacking two multi-quantum-well stacks tuned to absorb two different infrared wavelengths. The full width at half maximum (FWHM) of the mid-wave infrared (MWIR) band extends from 4.4 - 5.1 μm and FWHM of the long-wave infrared (LWIR) band extends from 7.8 - 8.8 μm. Dual-band QWIP detector arrays were hybridized with direct injection 30 μm pixel pitch megapixel dual-band simultaneously readable CMOS read out integrated circuits using the indium bump hybridization technique. The initial dual-band megapixel QWIP FPAs were cooled to 68K operating temperature. The preliminary data taken from the first megapixel QWIP FPA has shown system NE▵T of 27 and 40 mK for MWIR and LWIR bands respectively.

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S. D. Gunapala, S. V. Bandara, J. K. Liu, J. M. Mumolo, D. Z. Ting, C. J. Hill, J. Nguyen, and S. B. Rafol "Demonstration of 1024x1024 pixel dual-band QWIP focal plane array", Proc. SPIE 7660, Infrared Technology and Applications XXXVI, 76603L (3 May 2010); https://doi.org/10.1117/12.851175

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