HgCdTe 20482 FPA for infrared astronomy: development status

Lester J. Kozlowski; Kadri Vural; Scott A. Cabelli; Annie Chi-yi Chen; Donald E. Cooper; Gary L. Bostrup; Craig A. Cabelli; Klaus-Werner Hodapp; Donald N. B. Hall; William E. Kleinhans

doi:10.1117/12.317323

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21 August 1998 HgCdTe 2048² FPA for infrared astronomy: development status

Lester J. Kozlowski, Kadri Vural, Scott A. Cabelli, Annie Chi-yi Chen, Donald E. Cooper, Gary L. Bostrup, Craig A. Cabelli, Klaus-Werner Hodapp, Donald N. B. Hall, William E. Kleinhans

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Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317323
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

The HAWAII-2 is an IR 2048² focal plane array (FPA) that is being developed for next-generation IR astronomy. It will supplant our HAWAII 1024² as the largest high- performance imaging array available for IR astronomy. As with our prior IR sensor, the flip-chip hybrid will consist of a low-capacitance HgCdTe detector array mated to a low- noise CMOS silicon multiplexer via indium interconnects. In order to accommodate reasonable telescope optics and fabrication of the large sophisticated readout using world- class submicron CMOS, the FPA has 18 micrometers pixel pitch. We anticipate > 5 percent yield of defect-free multiplexers using 0.8 micrometers CMOS. The HgCdTe detector arrays will be fabricated on large wafers including sapphire and silicon. Though the first FPAs will have 2.5 micrometers cut-off, the readout will be able to support longer wavelengths. Also reported are the latest 1024 X 1024 FPA results with 2.5 micrometers HgCdTe detectors.

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Lester J. Kozlowski, Kadri Vural, Scott A. Cabelli, Annie Chi-yi Chen, Donald E. Cooper, Gary L. Bostrup, Craig A. Cabelli, Klaus-Werner Hodapp, Donald N. B. Hall, and William E. Kleinhans "HgCdTe 2048² FPA for infrared astronomy: development status", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317323

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