Computer Science – Performance
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.356..207k&link_type=abstract
In ESA, Proceedings of an ESA Symposium on Photon Detectors for Space Instrumentation p 207-210 (SEE N94-15025 03-19)
Computer Science
Performance
13
Bolometers, Far Infrared Radiation, Submillimeter Waves, Technology Assessment, Continuous Radiation, Design Analysis, Detection, Mapping
Scientific paper
The theory of operation of submm/FIR bolometers and their technology are described. Bolometers are detectors that work by recording the temperature rise due to the absorption of radiation with the aid of a resistance thermometer. Photons of any wavelength can be detected as long as an efficient absorbing structure for that wavelength can be designed. In fact, even particle radiation can be detected by the same mechanism. While thoughout much of the electromagnetic spectrum other types of detectors are superior, bolometers are still the most sensitive detectors for continuum radiation in the mm/submm range. Therefore, all large ground based mm/submm telescopes are equipped with bolometers for continuum studies. In principle, the performance of a bolometer can be improved without limits by lowering the operating temperature. At temperatures below 300 mK, bolometers have the potential to operate near the fundamental background limit in most environments. Combining them into arrays is relatively easy because of the basic simplicity of the detectors and the associated electronics. Therefore bolometers seem to be able to stand up to the challenge of competing detector technologies in the near future.
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