A superconductor–insulator–normal metal bolometer with microwave readout suitable for large-format arrays

A superconductor–insulator–normal metal bolometer with microwave readout suitable for large-format arrays
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具有微波读数功能的超导体-绝缘体-普通金属辐射热计,适用于大型阵列

DOI:
10.1063/1.1855411
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发表时间:
2005
影响因子:
4
通讯作者:
J. Ullom
J. Ullom
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
D. Schmidt;K. Lehnert;A. Clark;W. Duncan;K. Irwin;N. Miller;J. Ullom

文献摘要

被引文献

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我们展示了一种超导体-绝缘体-普通金属-绝缘体-超导体热电子测辐射热计元件的高带宽和低噪声读出。我们测得噪声当量温度优于0.6μK/Hz1/2,在270mK的工作温度下,当正常金属体积为4.5m3时,其电噪声当量功率为7×10−17W/Hz1/2。用脉冲偏置技术测量了S在270 mK时的热时间常数为1.2μ。我们采用的微波读出方法与未来远红外空间和地面天文台所需的103-105像素的大尺寸阵列兼容。
We demonstrate high bandwidth and low-noise readout of a superconductor–insulator–normal metal–insulator–superconductor hot-electron bolometer element. We measure a noise equivalent temperature of better than 0.6μK∕Hz1∕2 and infer an electrical noise equivalent power of 7×10−17W∕Hz1∕2 for a normal-metal volume of 4.5μm3 at an operating temperature of 270mK. Using a pulsed bias technique we measure a thermal time constant of 1.2μs at 270mK. The microwave readout method we employ is compatible with large-format arrays of 103–105pixels required by future far-infrared space and ground-based observatories.