Transition edge sensors for bolometric applications : responsivity and saturation
Transition edge sensors for bolometric applications : responsivity and saturation
复制标题
用于测辐射热应用的过渡边缘传感器：响应度和饱和度
DOI：
10.1063/1.2909981
复制
发表时间：
2008
影响因子：
3.2
通讯作者：
S. Withington
中科院分区：
文献类型：
--
作者：
D. Goldie;M. D. Audley;D. Glowacka;V. Tsaneva;S. Withington
Microstrip-coupled transition edge sensors (TESs) combined with waveguide-horn technology produce sensitive bolometric detectors with well-defined, single-mode beam patterns and excellent polarization characteristics. These devices are now being deployed for astronomical observations. In bolometric applications, where power levels are monitored, the critical parameter that characterizes the detection is the power-to-current responsivity sI(ω), where ω is the postdetection angular frequency. In real applications, such as on a ground-based telescope, the signal of interest is superimposed on a background such as the thermal emission from the atmosphere. The power emitted by the atmosphere changes slowly in time and these changes may change the responsivity of the detector. A detailed understanding of how sI(ω) changes as a function of applied power levels and how the TES response saturates is vital for accurate calibration of astronomical data. In this paper we describe measurements of the changes in the cu...
