摘要
微波动态电感探测器(MKIDs)是一种具有广阔应用前景的太赫兹超导直接检波探测器。其采用频分复用读出技术,易发展为大规模探测器阵列。本文研究探测器采用8行8列正方形排布,所有谐振器耦合到同一条CPW传输线进行信号的传输。设计谐振频率范围为4GHz-5.575GHz,谐振器频率间隔为25MHz。探测器阵列工作在0.35THz频段,每个探测器双槽天线相对带宽为10%。对Si基Al膜8×8像元MKIDs探测器阵列的表面薄膜特性、谐振器谐振频率温度相关性及探测器灵敏度NEP进行了详细的实验测试研究,并给出测试结果。测试探测器NEP达到10-17W/Hz^(1/2)量级。
Microwave kinetic inductance detectors(MKIDs) is a promising superconducting terahertz direct detection detector. It uses frequency domain multiplexing(FDM) readout technology and is easy to develop into large scale detectors array. In this paper, the detectors are arranged in 8×8 array, and all resonators are coupled to the same CPW transmission line for signal transmission. The designed resonant frequency range is 4GHz-5.575 GHz, and the resonator frequency interval is 25 MHz. The detectors array operates in the 0.35 THz frequency band with a relative bandwidth of 10% per detector double slot antenna. The surface film characteristics, resonator resonant frequency, temperature dependence and detector sensitivity NEP of Si based Al 8×8 pixel MKIDs are studied in detail. The test results are given. The test probe NEP reached 10-17W/Hz^(1/2).
出处
《微波学报》
CSCD
北大核心
2017年第S1期266-270,共5页
Journal of Microwaves
基金
国家自然科学基金(11473076)(11422326)
中国科学院先导专项(XDB23020200)
关键词
太赫兹
超导
动态电感
频分复用
terahertz
superconductor
kinetic inductance
frequency domain multiplexing
