%0 Journal Article
%T Spectral response and noise temperature of a 2.5 THz spiral antenna coupled NbN HEB mixer
%A Zhang, W.
%A Miao, W.
%A Yao, Q. J.
%A Lin, Z. H.
%A Shi, S. C.
%A Gao, J. R.
%A Goltsman, G. N.
%J Phys. Procedia
%D 2012
%V 36
%@ 1875-3892
%F Zhang_etal2012
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1381), last updated on Thu, 13 May 2021 19:08:43 -0500
%X We report on a 2.5 THz spiral antenna coupled NbN hot electron bolometer (HEB) mixers, fabricated with in-situ process. The receiver noise temperature with lowest value of 1180 K is in good agreement with calculated quantum efficiency factor as a function of bias voltage. In addition, the measured spectral response of the spiral antenna coupled NbN HEB mixer shows broad frequency coverage of 0.8-3 THz, and corrected response for optical losses, FTS, and coupling efficiency between antenna and bolometer falls with frequency due to diffraction-limited beam of lens/antenna combination.
%K NbN HEB mixer
%R 10.1016/j.phpro.2012.06.169
%U https://linkinghub.elsevier.com/retrieve/pii/S1875389212021062
%U https://doi.org/10.1016/j.phpro.2012.06.169
%P 334-337