Print Email Facebook Twitter NbN hot electron bolometer mixer at 5.3 THz Title NbN hot electron bolometer mixer at 5.3 THz Author Zhang, W. Gao, J.R. Khosropanah, P. Bansal, T. Klapwijk, T.M. Miao, W. Shi, S.C. Faculty Applied Sciences Department Kavli Institute of Nanoscience Date 2010-12-31 Abstract 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. Subject THz superconducting mixer, THz antenna, beam patterns, receiver noise temperature To reference this document use: http://resolver.tudelft.nl/uuid:278106a3-743d-4459-a7d8-63acea463e8c DOI https://doi.org/10.1117/12.857683 Publisher SPIE ISSN 0277-786X Source Proceedings of SPIE, 2010 vol. 7741 Part of collection Institutional Repository Document type conference paper Rights (c)2010 The Authors Files PDF 7741Zhang.pdf 701.52 KB Close viewer /islandora/object/uuid:278106a3-743d-4459-a7d8-63acea463e8c/datastream/OBJ/view