8 December 2003 Two-color HgCdTe infrared staring focal plane arrays
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Abstract
Raytheon Vision Systems (RVS) in collaboration with HRL Laboratories is contributing to the maturation and manufacturing readiness of third-generation two-color HgCdTe infrared staring focal plane arrays (FPAs). This paper will highlight data from the routine growth and fabrication of 256x256 30μm unit-cell staring FPAs that provide dual-color detection in the mid-wavelength infrared (MWIR) and long-wavelength infrared (LWIR) spectral regions. FPAs configured for MWIR/MWIR, MWIR/LWIR and LWIR/LWIR detection are used for target identification, signature recognition and clutter rejection in a wide variety of space and ground-based applications. Optimized triple-layer-heterojunction (TLHJ) device designs and molecular beam epitaxy (MBE) growth using in-situ controls has contributed to individual bands in all two-color FPA configurations exhibiting high operability (>99%) and both performance and FPA functionality comparable to state-of-the-art single-color technology. The measured spectral cross talk from out-of-band radiation for either band is also typically less than 10%. An FPA architecture based on a single mesa, single indium bump, and sequential mode operation leverages current single-color processes in production while also providing compatibility with existing second-generation technologies.
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Edward P. Smith, Edward P. Smith, Le T. Pham, Le T. Pham, Gregory M. Venzor, Gregory M. Venzor, Elyse Norton, Elyse Norton, Michael Newton, Michael Newton, Paul Goetz, Paul Goetz, Valerie Randall, Valerie Randall, Gregory Pierce, Gregory Pierce, Elizabeth A. Patten, Elizabeth A. Patten, Raymond A. Coussa, Raymond A. Coussa, Ken Kosai, Ken Kosai, William A. Radford, William A. Radford, John Edwards, John Edwards, Scott M. Johnson, Scott M. Johnson, Stefan T. Baur, Stefan T. Baur, John A. Roth, John A. Roth, Brett Nosho, Brett Nosho, John E. Jensen, John E. Jensen, Randolph E. Longshore, Randolph E. Longshore, } "Two-color HgCdTe infrared staring focal plane arrays", Proc. SPIE 5209, Materials for Infrared Detectors III, (8 December 2003); doi: 10.1117/12.507811; https://doi.org/10.1117/12.507811
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