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Author
Seliverstov, Sergey V.
;
Rusova, Anastasia A.
;
Kaurova, Natalya S.
;
Voronov, Boris M.
;
Goltsman, Gregory N.
Title
AC-biased superconducting NbN hot-electron bolometer for frequency-domain multiplexing
Type
Conference Article
Year
2017
Publication
Proc. 28
th
Int. Symp. Space Terahertz Technol.
Abbreviated Journal
Proc. 28
th
Int. Symp. Space Terahertz Technol.
Volume
Issue
Pages
120-122
Keywords
NbN HEB mixer
Abstract
We present the results of characterization of fast and sensitive superconducting antenna-coupled THz direct detector based on NbN hot-electron bolometer (HEB) with AC-bias. We discuss the possibility of implementation of the AC-bias for design the readout system from the multi-element arrays of HEBs using standard technique of frequency-domain multiplexing. We demonstrate experimentally that this approach does not lead to significant deterioration of the HEB sensitivity compared with the value obtained for the same detector with DC- bias. Results of a numerical calculations of the HEB responsivity at AC-bias are in a good agreement with the experiment.
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no
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1174
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