Title :
Improved low frequency stability of bolometric detectors
Author :
Wilbanks, T. ; Devlin, M. ; Lange, A.E. ; Sato, S. ; Beeman, J.W. ; Haller, E.E.
Author_Institution :
Dept. of Phys., California Univ., Berkeley, CA, USA
fDate :
4/1/1990 12:00:00 AM
Abstract :
An AC bridge readout system has been developed that greatly improves the low-frequency stability of bolometric detectors. The readout can be implemented with a simple circuit appropriate for use in space applications. A matched pair of detectors was used in the readout to achieve system noise within a factor of two of the fundamental noise limit of the detectors at frequencies as low as 10 mHz. The low-frequency stability of the readout system allows slower, more sensitive detectors to be used in many applications, and it facilitates observing strategies that are well suited to space-borne observations
Keywords :
bolometers; bridge circuits; frequency stability; 10 mHz; AC bridge readout system; bolometric detectors; fundamental noise limit; low frequency stability; matched pair; space applications; space-borne observations; system noise; Frequency; Heat sinks; Infrared detectors; Infrared heating; Low-frequency noise; Optical noise; Radiation detectors; Semiconductor device noise; Stability; Telescopes;
Journal_Title :
Nuclear Science, IEEE Transactions on
