Improved superconducting hot-electron bolometer devices for the THz range | Zendy

Teun M. Klapwijk | Zendy; R. Barends | Zendy; J. R. Gao | Zendy; M. Hajenius | Zendy; J. J. A. Baselmans | Zendy

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Improved superconducting hot-electron bolometer devices for the THz range

Author(s) -

Teun M. Klapwijk,

R. Barends,

J. R. Gao,

M. Hajenius,

J. J. A. Baselmans

Publication year - 2004

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 - 10.1117/12.552916

Subject(s) - bolometer , terahertz radiation , superconductivity , materials science , electron , electron temperature , mixing (physics) , optoelectronics , noise (video) , range (aeronautics) , electrical resistivity and conductivity , atmospheric temperature range , condensed matter physics , physics , optics , detector , nuclear physics , computer science , image (mathematics) , composite material , quantum mechanics , artificial intelligence , meteorology

Improved and reproducible heterodyne mixing (noise temperatures of 950 K at 2.5 THz) has been realized with NbN based hot-electron superconducting devices with low contact resistances. A distributed temperature numerical model of the NbN bridge, based on a local electron and a phonon temperature, has been used to understand the physical conditions during the mixing process. We find that the mixing is predominantly due to the exponential rise of the local resistivity as a function of electron temperature.

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