NbN hot electron bolometer mixer at 5.3 THz

被引：1
|
作者：
Zhang, W. [1 ,2 ]
Gao, J. R. [1 ,3 ]
Khosropanah, P. [1 ]
Bansal, T. [1 ,3 ]
Klapwijk, T. M. [3 ]
Miao, W.
Shi, S. C. [2 ]
机构：
[1] SRON Netherlands Inst Space Res, Utrecht, Netherlands
[2] Chinese Acad Sci, Natl Astron Observ China, Purple Mt Observ, Beijing, Peoples R China
[3] Delft Univ Technol, Kavli Inst Nanosci, Delft, Netherlands
来源：
MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY V | 2010年 / 7741卷
关键词：
THz superconducting mixer; THz antenna; beam patterns; receiver noise temperature; QUANTUM CASCADE LASER; HETERODYNE RECEIVER;
D O I：
10.1117/12.857683
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the sensitivity of a superconducting NbN hot electron bolometer mixer integrated with a tight spiral antenna at 5.3 THz. Using a measurement setup with black body calibration sources and a beam splitter in vacuo, and an antireflection coated Si lens, we obtained a double sideband receiver noise temperature of 1150 K, which is 4.5 times h nu/k(B) (quantum limit). Our experimental results in combination with an antenna- to- bolometer coupling simulation suggest that HEB mixer can work well at least up to 6 THz, suitable for next generation of high- resolution spectroscopic of the neutral atomic oxygen (OI) line at 4.7 THz.
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页数：8
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