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High-impedance surfaces for above-IC integration of cooled bolometer arrays at the 350-μm wavelength

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Poglitsch,  A.
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

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Citation

Dussopt, L., Aliane, A., Kaya, H., Goudon, V., Rodriguez, L., Delisle, C., et al. (2022). High-impedance surfaces for above-IC integration of cooled bolometer arrays at the 350-μm wavelength. Journal of Low Temperature Physics, (209), 1258-1263. doi:10.1007/s10909-022-02814-9.


Cite as: https://hdl.handle.net/21.11116/0000-000C-79E0-F
Abstract
High-impedance surfaces (HIS) are investigated here for the above-IC integration of sub-millimeter-wave (350 µm here) detectors on CMOS electronics using standard thin film manufacturing processes and materials. We demonstrate theoretically and experimentally the efficient optical absorption of a resistive dipole array above an HIS at cryogenic temperature. More specifically, an absorption above 78% in linear polarization is obtained over a bandwidth of 100 µm around a center wavelength of 350 µm. These results confirm the promising performances of HIS structures in the perspective of future polarimetric bolometers in terms of absorption efficiency, bandwidth and cross-polarization discrimination.