CAPABILITIES OF ANTENNA-COUPLED SUPERCONDUCTING MICROBOLOMETERS

Parameters of antenna-coupled superconducting microbolometers in far-i nfrared and submillimeter wavelength regions are considered under the condition of their limitation by background fluctuations Theoretical a nalysis shows that at cryogenic temperatures application of antenna re ception leads to sharp decrease of response time tau of bolometers wit hout any decrease in their detectivity. Calculated characteristics of deep-cooled antenna-coupled microbolometers are being compared with me asured parameters of Au/Pb/Sn and YBaCuO microbolometers. operating at 3.6 - 4.7 K and 70 - 90 K, respectively.