Improved low frequency stability of bolometric detectors

Details Improved low frequency stability of bolometric detectors Improved low frequency stability of bolometric detectors

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990itns...37..566w&link_type=abstract

(IEEE, 1989 Nuclear Science Symposium, San Francisco, CA, Jan. 17-19, 1990) IEEE Transactions on Nuclear Science (ISSN 0018-9499

Mathematics

Logic

23

Bolometers, Frequency Stability, Infrared Telescopes, Network Analysis, Submillimeter Waves, Low Frequencies, Signal To Noise Ratios, Spaceborne Astronomy, Technological Forecasting

Scientific paper

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 spaceborne observations.

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