Characterization of MgB₂ superconducting hot electron bolometers

Cunnane, D.; Kawamura, J. H.; Wolak, M. A.; Acharya, N.; Tan, T.; Xi, X. X.; Karasik, B. S.

Characterization of MgB₂ superconducting hot electron bolometers

Cunnane, D.; Kawamura, J. H.; Wolak, M. A.; Acharya, N.; Tan, T.; Xi, X. X.; Karasik, B. S.

URI: http://hdl.handle.net/2014/45500

Date: 2014-08-10

Keywords: Superconducting Devices; Terahertz Mixers

Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2014

Citation: IEEE Applied Superconductivity Conference 2014, Charlotte, North Carolina, August 10-15, 2014

Abstract:

Hot-Electron Bolometer (HEB) mixers have proven to be the best tool for high-resolution spectroscopy at the Terahertz frequencies. However, the current state of the art NbN mixers suffer from a small intermediate frequency (IF) bandwidth as well as a low operating temperature. MgB2 is a promising material for HEB mixer technology in view of its high critical temperature and fast thermal relaxation allowing for a large IF bandwidth. In this work, we have fabricated and characterized thin-film (~ 15 nm) MgB2-based spiral antenna-coupled HEB mixers on SiC substrate.

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