Investigation of Superconducting NbN Hot-Electron Bolometers for Terahertz Direct Detection

被引：0
|
作者：
Zhong, Jiaqiang [1 ,2 ,4 ]
Miao, Wei [1 ,2 ]
Zhang, Wen [1 ,2 ]
Shi, Sheng-cai [1 ,2 ]
Pajot, Francois [3 ]
机构：
[1] Chinese Acad Sci, PMO, Nanjing 210008, Jiangsu, Peoples R China
[2] Chinese Acad Sci, KLRA, Nanjing 210008, Jiangsu, Peoples R China
[3] Univ Paris 11, CNRS, IAS, F-91405 Orsay, France
[4] UCAS, Beijing 100040, Peoples R China
来源：
2014 XXXITH URSI GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM (URSI GASS) | 2014年
关键词：
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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：
In this paper, we report on the terahertz (THz) direct detection performance of two superconducting niobium nitride (NbN) hot-electron bolometers (HEBs) of different micro-bridge sizes. At the optimum bias point, the two HEB devices show similar thermal conductance (similar to 80nW/K). The measured responsivity coincides well with the electrical responsivity calculated from the measured current-voltage (IV) curves at different bath temperatures. The noise equivalent power (NEP) of the two HEB devices is found to be about 10(-12)W/root Hz.
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页数：4
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