Superconductive digital readout for IR FPA sensors

Dale J. Durand; L. A. Abelson; Bruce J. Dalrymple; Larry R. Eaton; Lee O. Heflinger; Michael Leung; Thanh Pham; Robert D. Sandell; Arnold H. Silver; J. W. Spargo

doi:10.1117/12.60504

1 July 1992 Superconductive digital readout for IR FPA sensors

Dale J. Durand, L. A. Abelson, Bruce J. Dalrymple, Larry R. Eaton, Lee O. Heflinger, Michael Leung, Thanh Pham, Robert D. Sandell, Arnold H. Silver, J. W. Spargo

Author Affiliations +

Proceedings Volume 1684, Infrared Readout Electronics; (1992) https://doi.org/10.1117/12.60504
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

We have built and demonstrated an all superconductive digital readout for use in an IR focal plane array sensor. High performance, ultralow power superconductive circuits perform the functions of low noise preamplification and analog to digital conversion. The superconductive readout was tested with a variety of detectors, including InSb, Si:As, and a thin film NbN superconducting detector. Light sources included a HeNe laser (0.6 micron), a CO2 laser (10 microns), and a blackbody (400 to 900 K). In each case, the detector and readout circuitry was assembled into a 2 inch diameter, 6 inch long test package cooled in a single dewar. We demonstrated the functionality of the detector/readout channel from input photons to output digital signal. The superconductive readout reported here used Nb-based circuits operating at 4 K. An NbN squid amplifier and detector have subsequently been demonstrated above 10 K. We discuss the extension of the entire digital readout to operating temperatures above 10 K.

Citation Download Citation

Dale J. Durand, L. A. Abelson, Bruce J. Dalrymple, Larry R. Eaton, Lee O. Heflinger, Michael Leung, Thanh Pham, Robert D. Sandell, Arnold H. Silver, and J. W. Spargo "Superconductive digital readout for IR FPA sensors", Proc. SPIE 1684, Infrared Readout Electronics, (1 July 1992); https://doi.org/10.1117/12.60504

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