NbN hot electron bolometer mixer at 5.3 THz | Zendy

Wen Zhang | Zendy; J. R. Gao | Zendy; P. Khosropanah | Zendy; Tarun Bansal | Zendy; T. M. Klapwijk | Zendy; Wei Miao | Zendy; S. C. Shi | Zendy

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NbN hot electron bolometer mixer at 5.3 THz

Author(s) -

Wen Zhang,

J. R. Gao,

P. Khosropanah,

Tarun Bansal,

T. M. Klapwijk,

Wei Miao,

S. C. Shi

Publication year - 2010

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.857683

Subject(s) - bolometer , terahertz radiation , hot electron , electron , optoelectronics , materials science , physics , optics , nuclear physics , detector

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?/kB (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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