Superconducting Detectors for Terahertz Imaging

被引:0
作者
Jiang, S. L. [1 ]
Jia, X. Q. [1 ]
Jin, B. B. [1 ]
Kang, L. [1 ]
Xu, W. W. [1 ]
Chen, J. [1 ]
Wu, P. H. [1 ]
机构
[1] Nanjing Univ, Res Inst Superconductor Elect, Nanjing 210093, Jiangsu, Peoples R China
来源
2015 40TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ) | 2015年
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中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Superconducting niobium nitride (NbN) hot electron bolometer (HEB) detectors consist of a complementary logarithmic-spiral antenna made of gold and an NbN film (bridge) connecting across the antenna's inner terminals have been fabricated and characterized. For its performance as a heterodyne mixer, the system DSB noise temperature of about 500 K and the intermediate frequency (IF) gain bandwidth (GBW) of about 4 GHz have been obtained at 4.2 K and 0.65 THz. For its performance as a direct detector, a microwave-driven scheme has been tried.
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相关论文
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