Progress on readout electronics for far-infrared arrays

Erick T. Young

doi:10.1117/12.178487

23 June 1994 Progress on readout electronics for far-infrared arrays

Erick T. Young

Proceedings Volume 2226, Infrared Readout Electronics II; (1994) https://doi.org/10.1117/12.178487
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

The far-infrared is a key wavelength regime for astronomical observations. Until recently, however, development of useful large format arrays at these wavelengths has been hampered by the lack of suitable readouts that operate well at the very low temperatures required by these detectors. We report on the initial characterization of CRC-696 readouts fabricated at the Hughes Technology Center (Carlsbad CA) specifically built to operate at 4 K and lower. These devices have been optimized to work with extrinsic germanium photoconductors. At these low temperatures, the fully multiplexed 32-channel readouts has a read noise below 30 electrons at a power dissipation of 1 (mu) W per channel. We also report on the testing of the first complete focal plane module fabricated with these devices. This module is operating at a level of performance (dark current, noise, stability, and power dissipation) that make arrays built with this technology suitable candidates for the next generation of space infrared observatories.

Citation Download Citation

Erick T. Young "Progress on readout electronics for far-infrared arrays", Proc. SPIE 2226, Infrared Readout Electronics II, (23 June 1994); https://doi.org/10.1117/12.178487

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