%0 Conference Proceedings
%T Optimization of hot eleciron bolometer mixing efficiency in NbN at 119 micrometer wavelength
%A Gerecht, E.
%A Musante, C. F.
%A Wang, Z.
%A Yngvesson, K. S.
%A Mueller, E. R.
%A Waldman, J.
%A Gol'tsman, G. N.
%A Voronov, B. M.
%A Cherednichenco, S. I.
%A Svechnikov, S. I.
%A Yagoubov, P. A.
%A Gershenzon, E. M.
%S Proc. 7[super:th] Int. Symp. Space Terahertz Technol.
%D 1996
%F Gerecht_etal1996
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1616), last updated on Wed, 26 May 2021 13:06:32 -0500
%X We describe an investigation of a NbN HEB mixer for 2.5 THz. An intrinsic conversion loss of 23 dB has been measured with a two-laser measurement technique. The conversion loss was limited by the LO power available and is expected to decrease to 10 dB or less when sufficient LO power is available. For this initial experiment we used a prototype device which is directly coupled to the laser beams. We present results for a back-short technique that improves the optical coupling to the device and describe our progress for an antenna-coupled device with a smaller dimension. Based on our measured data for conversion loss and device output noise level, we predict that NbN HEB mixers will be capable of achieving DSB receiver noise temperatures of ten times the quantum noise limit in the THz range.
%K NbN HEB mixers
%U https://www.nrao.edu/meetings/isstt/1996.shtml
%P 584-600