Title :
Direct detection of terahertz signals at 493GHz using Nb superconducting tunnel junctions
Author :
Wang, Zheng ; Liu, Dong ; Li, Jing ; Shi, Sheng-Cai
Author_Institution :
Purple Mountain Obs., Nanjing, China
Abstract :
Superconducting tunnel junctions are good candidates for the direct detection of terahertz signals. In this paper, the direct detection behavior of Nb-based superconducting tunnel junctions at 493GHz is demonstrated. The performance of the detector is evaluated in several aspects, including noise characteristics, current response and frequency response.
Keywords :
niobium; superconducting junction devices; superconductive tunnelling; Nb; Nb superconducting tunnel junction; current response; frequency 493 GHz; frequency response; noise characteristics; terahertz signal; Current measurement; Detectors; Extraterrestrial measurements; Frequency measurement; Josephson junctions; Junctions; Noise; Superconducting tunnel junctions; THz; direct detection;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230046
