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

被引：55
作者：
Li, Jing [1 ]
Takeda, Masanori [2 ]
Wang, Zhen [2 ]
Shi, Sheng-Cai
Yang, Ji
机构：
[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
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 22期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2940235
中图分类号：
O59 [应用物理学];
学科分类号：
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.
引用
收藏
页数：3
相关论文
共 25 条
[11]   Low-noise submillimeter-wave NbTiN superconducting tunnel junction mixers [J].
Kawamura, J ;
Chen, J ;
Miller, D ;
Kooi, J ;
Zmuidzinas, J ;
Bumble, B ;
LeDuc, HG ;
Stern, JA .
APPLIED PHYSICS LETTERS, 1999, 75 (25) :4013-4015
[12]   Very high-current-density Nb/AlN/Nb tunnel junctions for low-noise submillimeter mixers [J].
Kawamura, J ;
Miller, D ;
Chen, J ;
Zmuidzinas, J ;
Bumble, B ;
LeDuc, HG ;
Stern, JA .
APPLIED PHYSICS LETTERS, 2000, 76 (15) :2119-2121
[13]   PERFORMANCE OF NBN SUPERCONDUCTIVE TUNNEL-JUNCTIONS AS SIS MIXERS AT 205 GHZ [J].
MCGRATH, WR ;
STERN, JA ;
JAVADI, HHS ;
CYPHER, SR ;
HUNT, BD ;
LEDUC, HG .
IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) :2650-2653
[14]   SUBMILLIMETER ASTRONOMY [J].
PHILLIPS, TG ;
KEENE, J .
PROCEEDINGS OF THE IEEE, 1992, 80 (11) :1662-1678
[15]   Design and development of SIS mixers for ALMA band 10 [J].
Shan, Wenlei ;
Shi, Shengcai ;
Matsunaga, Teruhiko ;
Takizawa, Manabu ;
Endo, Akira ;
Noguchi, Takashi ;
Uzawa, Yoshinori .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2007, 17 (02) :363-366
[16]  
SHI SC, 1994, 19 INT C IR MM WAV S, P110
[17]   NIOBIUM NITRIDE JOSEPHSON TUNNEL-JUNCTIONS WITH MAGNESIUM-OXIDE BARRIERS [J].
SHOJI, A ;
AOYAGI, M ;
KOSAKA, S ;
SHINOKI, F ;
HAYAKAWA, H .
APPLIED PHYSICS LETTERS, 1985, 46 (11) :1098-1100
[18]  
Stern J. A., 1998, P 9 INT S SPAC THZ T, P305
[19]   QUANTUM DETECTION AT MILLIMETER WAVELENGTHS [J].
TUCKER, JR ;
FELDMAN, MJ .
REVIEWS OF MODERN PHYSICS, 1985, 57 (04) :1055-1113
[20]   Quasi-optical NbN/AlN/NbN mixers in submillimeter wave band [J].
Uzawa, Y ;
Wang, Z ;
Kawakami, A .
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1997, 7 (02) :2574-2577
123