1.6 THz heterodyne receiver for the far infrared space telescope

Journal article (2002)

Authors

Serguei Cherednichenko Chalmers University of Technology
M. Kroug Chalmers University of Technology
H. Merkel Chalmers University of Technology
P. Khosropanah Chalmers University of Technology
A. J.L. Adam Chalmers University of Technology
E. Kollberg Chalmers University of Technology
D. Loudkov Moscow State Pedagogical University
Gregory Gol'tsman Moscow State Pedagogical University
B. Voronov Moscow State Pedagogical University
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Published Date

2002

Language

English

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Abstract

A low noise heterodyne receiver is being developed for the terahertz range using a phonon-cooled hot-electron bolometric mixer based on 3.5 nm thick superconducting NbN film. In the 1–2 GHz intermediate frequency band the double-sideband receiver noise temperature was 450 K at 0.6 THz, 700 K at 1.6 THz and 1100 K at 2.5 THz. In the 3–8 GHz IF band the lowest receiver noise temperature was 700 K at 0.6 THz, 1500 K at 1.6 THz and 3000 K at 2.5 THz while it increased by a factor of 3 towards 8 GHz.