Superconducting submillimeter and millimeter wave detectors Page: 11 of 135
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P=P+P exp(iwt)
0 1AT = T+ T exp(i ot)
Absorber @
thermometer
condu
Thermal sinkC = Heat capacity
hermal
ctanceSimplified thermal model for a bolometer. The thermally active region
consists of an rf absorber and a thermometer to measure the temperature
rise AT. The speed of response is determined by the ratio C/G, while the
ultimate sensitivity is determined by the thermal conductance G. A sensitive
bolometer should have a low heat capacity, low thermal conductance, and
be operated at low temperatures.
5Fig. 2.1
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Nahum, M. Superconducting submillimeter and millimeter wave detectors, thesis or dissertation, October 20, 1992; California. (https://digital.library.unt.edu/ark:/67531/metadc1311365/m1/11/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.