Feasibility of the high <i>T</i> <i>c</i> superconducting bolometer
P. L. RichardsDepartment of Physics, University of California, and Center for Advanced Materials, Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720John ClarkeDepartment of Physics, University of California, and Center for Advanced Materials, Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720R. LeoniDepartment of Physics, University of California, and Center for Advanced Materials, Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720Ph. LerchDepartment of Physics, University of California, and Center for Advanced Materials, Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720S. VergheseDepartment of Physics, University of California, and Center for Advanced Materials, Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720M. R. BeasleyDepartment of Applied Physics, Stanford University, Stanford, California 94305T. H. GeballeDepartment of Applied Physics, Stanford University, Stanford, California 94305R. H. HammondDepartment of Applied Physics, Stanford University, Stanford, California 94305P. RosenthalDepartment of Applied Physics, Stanford University, Stanford, California 94305Steven SpielmanDepartment of Applied Physics, Stanford University, Stanford, California 94305
1989en
ABI
Аннотация
A design analysis is given for a bolometric infrared detector that uses the resistive transition of a high-temperature superconductor as the temperature sensing element, and liquid nitrogen (LN) as the coolant. It is shown that for highly oriented c-axis films, the measured low-frequency noise causes little or no degradation of the performance. With the incoming radiation chopped at 10 Hz, noise equivalent powers (NEP) in the range (1–20)×10−12 W Hz−1/2 should be achievable. These values compare favorably with the NEP of other detectors operating at or above LN temperatures for wavelengths greater than 20 μm.
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