This paper considers characteristics of a resonance bolometer which is an infrared radiation detector depending for its operation on measuring the temperature dependence of parameters of a reactive element connected into a high-Q oscillatory circuit. The optimal pumping and heat removal conditions are determined with consideration for thermal feedback. The voltage-power sensitivity and noise are measured for microwave-pumped bolometers with active elements (cryogenic dielectric resonators made of potassium tantalate and strontium titanate) included in their circuits.
Department of Physics of Oscillations, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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