@Article{Yagoubov_etal1998,
author="Yagoubov, P.
and Kroug, M.
and Merkel, H.
and Kollberg, E.
and Gol{\textquoteright}tsman, G.
and Svechnikov, S.
and Gershenzon, E.",
title="Noise temperature and local oscillator power requirement of NbN phonon-cooled hot electron bolometric mixers at terahertz frequencies",
journal="Appl. Phys. Lett.",
year="1998",
volume="73",
number="19",
pages="2814--2816",
optkeywords="NbN HEB mixers; noise temperature; local oscillator power",
abstract="In this letter, the noise performance of NbN-based phonon-cooled hot electron bolometric quasioptical mixers is investigated in the 0.55--1.1 THz frequency range. The best results of the double-sideband <cd><2018>DSB<cd><2019> noise temperature are: 500 K at 640 GHz, 600 K at 750 GHz, 850 K at 910 GHz, and 1250 K at 1.1 THz. The water vapor in the signal path causes significant contribution to the measured receiver noise temperature around 1.1 THz. The devices are made from 3-nm-thick NbN film on high-resistivity Si and integrated with a planar spiral antenna on the same substrate. The in-plane dimensions of the bolometer strip are typically 0.2{\"I}{\guillemotleft}2 um. The amount of local oscillator power absorbed in the bolometer is less than 100 nW.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=911), last updated on Tue, 25 May 2021 17:15:08 -0500",
doi="10.1063/1.122599",
opturl="https://aip.scitation.org/doi/abs/10.1063/1.122599",
opturl="https://doi.org/10.1063/1.122599"
}