Indium Antimonide detectors have been fabricated with characteristics optimized for operation at liquid Helium temperatures. Responsivity and electrical characteristics of these detectors have been measured and are reported here. Results show that no significant loss of responsivity occurs in the three to five micron region, as had been previously reported. Also, a significant reduction in capacitance (factor of 4) has been realized.
J. T. Wimmers,
D. S. Smith,
"Optimization Of Indium Antimonide Detectors For Use At Liquid Helium Temperatures", Proc. SPIE 0510, Infrared Technology X, (21 January 1985); doi: 10.1117/12.945001; https://doi.org/10.1117/12.945001