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Low-noise 0.5 THz all-NbN superconductor-insulator-superconductor mixer for submillimeter wave astronomy

文献类型:期刊论文

作者Li, Jing1; Takeda, Masanori2; Wang, Zhen2; Shi, Sheng-Cai; Yang, Ji
刊名APPLIED PHYSICS LETTERS
出版日期2008-06-02
卷号92期号:22页码:222504
ISSN号0003-6951
关键词JOSEPHSON TUNNEL-JUNCTIONS SIS MIXERS TUNING CIRCUIT MILLIMETER
英文摘要We report the detection of spectral line emission from CO (J=4-3) at 0.46 THz using a low-noise 0.5 THz superconductor-insulator-superconductor (SIS) mixer incorporating NbN/AlN/NbN tunnel junctions (with an energy gap of 5.6 meV) and a NbN/MgO/NbN tuning circuit, which is installed on a 30 cm submillimeter telescope. Uncorrected receiver noise temperatures as low as 149 K are measured on the telescope from 0.45-0.50 THz for an unoptimized device. Moreover, the 0.5 THz all-NbN SIS mixer exhibits high stability in a considerably large dc bias range and low noise at significantly high temperatures compared with a 0.5 THz Nb SIS mixer. (c) 2008 American Institute of Physics.
学科主题Physics
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Physics, Applied
研究领域[WOS]Physics
关键词[WOS]JOSEPHSON TUNNEL-JUNCTIONS ; SIS MIXERS ; TUNING CIRCUIT ; MILLIMETER
收录类别SCI
语种英语
WOS记录号WOS:000256527900053
公开日期2011-12-29
源URL[http://159.226.72.40/handle/332002/1791]  
专题紫金山天文台_毫米波和亚毫米波技术实验室
作者单位1.Chinese Acad Sci, Grad Sch, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.NiCT, Kobe Adv ICT Res Ctr, Nishi Ku, Kobe, Hyogo 6512492, Japan
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Li, Jing,Takeda, Masanori,Wang, Zhen,et al. Low-noise 0.5 THz all-NbN superconductor-insulator-superconductor mixer for submillimeter wave astronomy[J]. APPLIED PHYSICS LETTERS,2008,92(22):222504.
APA Li, Jing,Takeda, Masanori,Wang, Zhen,Shi, Sheng-Cai,&Yang, Ji.(2008).Low-noise 0.5 THz all-NbN superconductor-insulator-superconductor mixer for submillimeter wave astronomy.APPLIED PHYSICS LETTERS,92(22),222504.
MLA Li, Jing,et al."Low-noise 0.5 THz all-NbN superconductor-insulator-superconductor mixer for submillimeter wave astronomy".APPLIED PHYSICS LETTERS 92.22(2008):222504.

入库方式: OAI收割

来源:紫金山天文台

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