A Frequency Sweeping Readout System for Kinetic Inductance Detectors Based on Submillimeter Radio Astronomy
A Frequency Sweeping Readout System for Kinetic Inductance Detectors Based on Submillimeter Radio Astronomy
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基于亚毫米射电天文学的动感电感探测器扫频读出系统
DOI：
10.1109/tthz.2015.2413751
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发表时间：
2015
影响因子：
3.2
通讯作者：
Yutaro
中科院分区：
文献类型：
--
作者：
Kiuchi;Hitoshi Okada;Takashi Karatsu;Kenichi Sekimoto;Yutaro
我们一直在开发一种基于微波动力学电感探测器（MKID）技术的太赫兹天文观测探测器阵列。MKID是通过将一条超导体制成微波谐振电路的一部分，并监测通过谐振器传输的探测信号的相位和幅度来实现的。频域多路复用将允许多达数千个谐振器通过一条线读出。我们开发了一个600像素的220 GHz探测器阵列和一个102像素的440 GHz探测器阵列。我们提出了一种新的探测器阵列读出系统方案，它采用扫频探测信号代替固定频率探测信号。该方案使我们能够直接测量光学加载后变化的谐振频率。
We have been developing a superconductive detector array for terahertz astronomical observation using Microwave Kinetic Inductance Detector (MKID) technology. MKID is accomplished by making a strip of superconductor part of a microwave resonant circuit, and monitoring the phase and amplitude of a probe signal transmitted through the resonator. Frequency-domain multiplexing will allow up to thousands of resonators to be read out through a single line. We developed a 600-pixel 220 GHz detector array and a 102-pixel 440-GHz detector array. We have developed a new scheme readout system for the detector arrays, and which uses a frequency-sweeping probe signal instead of a fixed-frequency probe signal. This scheme enables us a direct measurement of the changed resonance frequency after optical loading.