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Proceedings Paper

Development Of JFET Amplified InSb Infrared Detector Array For Use At Liquid Helium Temperature
Author(s): K. Yamamoto; H. Fujisada; T. Matsumoto; H. Murakami
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Paper Abstract

For astronomical observation in space, we have developed a JFET amplified InSb infrared detector array which can be operated at liquid helium temperature. This detector array uses 24- channel InSb photodiodes, 1 mm x 0.5 mm per element, having low junction capacitance for reducing noise. The JFET amplifier circuit is designed as a hybrid IC containing a 24-channel charge integration amplifier (CIA) array. Since the JFET amplifier circuit cannot operate at liquid helium temperature, it is suspended from the frame using aramid wires and warmed up to about 70 K by a built-in heater. We have evaluated this JFET amplified InSb infrared detector array and obtained good results with readout noise of about 100e . It was confirmed that this noise level is low enough for use in astronomical observation in space.

Paper Details

Date Published: 8 January 1990
PDF: 12 pages
Proc. SPIE 1157, Infrared Technology XV, (8 January 1990); doi: 10.1117/12.978612
Show Author Affiliations
K. Yamamoto, Hamamatsu Photonics K.K. (Japan)
H. Fujisada, Electrotechnical Laboratory (Japan)
T. Matsumoto, Nagoya University (Japan)
H. Murakami, The Institute of Space and Astronautical Science (Japan)

Published in SPIE Proceedings Vol. 1157:
Infrared Technology XV
Irving J. Spiro, Editor(s)

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