%0 Conference Proceedings
%T Low-noise HEB heterodyne receivers and focal plane arrays for the THz regime using NbN
%A Yngvesson, K. S.
%A Gerecht, E.
%A Musante, C. F.
%A Zhuang, Y.
%A Ji, M.
%A Goyette, T. M.
%A Dickinson, J. C.
%A Waldman, J.
%A Yagoubov, P. A.
%A Gol’tsman, G. N.
%A Voronov, B. M.
%A Gershenzon, E. M.
%Y Hwu, R. J.
%Y Wu, K.
%S Proc. SPIE
%D 1999
%V 3795
%I SPIE
%F Yngvesson_etal1999
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1561), last updated on Tue, 25 May 2021 11:37:34 -0500
%X We have developed prototype HEB receivers using thin film superconducting NbN devices deposited on silicon substrates. The devices are quasi-optically coupled through a silicon lens and a self-complementary log-specific toothed antenna. We measured DSB receiver noise temperatures of 500 K (13 X hf/2k) at 1.56 THz and 1,100 K (20 X hf/2k) at 2.24 THz. Noise temperatures are expected to fall further as devices and quasi-optical coupling methods are being optimized. The measured 3 dB IF conversion gain bandwidth for one device was 3 GHz, and it is estimated that the bandwidth over which the receiver noise temperature is within 3 dB of its minimum value is 6.5 GHz which is sufficient for a number of practical applications. We will discuss our latest results and give a detailed description of our prototype setup and experiments. We will also discuss our plans for developing focal plane arrays with tens of Hot Electron Bolometric mixer elements on a single silicon substrate which will make real time imaging systems in the THz region feasible.
%K NbN HEB mixers
%R 10.1117/12.370183
%U https://doi.org/10.1117/12.370183
%P 357-368