Superconducting metamaterial for sub-millimeter wave imaging: First light

Author

Abramov, N.N. ; Kuzmin, A.A. ; Shitov, Sergey ; Erhan, E.V. ; Ustinov, Alexey V.

Author_Institution

Nat. Univ. of Sci. & Technol. MISIS, Moscow, Russia

fYear

2014

fDate

25-28 Aug. 2014

Firstpage

1

Lastpage

3

Abstract

We present results of first experiments with elementary cells for detection of sub-millimeter-wave radiation. The cells realize frequency-division multiplexing (FDM) readout of an antenna coupled superconducting hot electron bolometers (HEB) by means of integrated GHz-range superconducting resonators. Such cells can be coupled to a single transmission line for FDM readout, forming a large format imaging metasurface. The design of metasurface, consisting of hexagonal clusters, is discussed and experimental results for both the single cell and the 7-element hexagonal cluster are presented. The prototypes have been fabricated using thin film Nb technology with T_C of HEB bridges about 5 K and frequencies of resonators in 5-8 GHz range. Optical sensitivity measurements using a black body radiation source resulted in optical NEP of the cell about 3×10^-14 W/√Hz at ambient temperature 1.4 K.

Keywords

bolometers; frequency division multiplexing; microwave imaging; millimetre wave antennas; superconducting materials; superconducting resonators; 7-element hexagonal cluster; FDM readout; HEB bridges; antenna coupled superconducting hot electron bolometers; black body radiation source; elementary cells; frequency 5 GHz to 8 GHz; frequency-division multiplexing; hexagonal clusters; imaging metasurface; integrated GHz-range superconducting resonators; optical NEP; optical sensitivity measurements; resonators; submillimeter wave imaging; submillimeterwave radiation detection; superconducting metamaterial; temperature 1.4 K; temperature 5 K; thin film niobium technology; transmission line; Detectors; Frequency division multiplexing; Optical resonators; Optical sensors; Optical variables measurement; Resonant frequency; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2014 8th International Congress on

Conference_Location

Lyngby

Print_ISBN

978-1-4799-3450-8

Type

conf

DOI

10.1109/MetaMaterials.2014.6948535

Filename

6948535