Physics – Optics
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apopt..31.6610a&link_type=abstract
Applied Optics (ISSN 0003-6935), vol. 31, no. 31, p. 6610-6615.
Physics
Optics
15
Bolometers, Cryogenic Temperature, Design Analysis, Infrared Instruments, Epoxy Matrix Composites, Noise Spectra
Scientific paper
The design and construction of 300-mK composite bolometers developed for millimeter-wave astronomical observations are described. Graphite fibers are used as the electrical leads for the thermistor to reduce the thermal conductance and heat capacity associated with the leads. A mechanical suspension made of Nylon fibers provides the required thermal conductance. Electrical noise equivalent powers below 1 x 10 exp -16 W/sq rt Hz have been achieved for detectors with thermal time constants of 11 ms. The detectors were installed in a millimeter-wave photometer and used to perform observations of the cosmic microwave background from a balloonborne platform. The flight performance was consistent with the measured laboratory properties.
Alsop D. C.
Inman Casey
Lange Andrew E.
Wibanks T.
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