@Article{Pentin_etal2017,
author="Pentin, Ivan
and Finkel, Matvey
and Maslennikov, Sergey
and Vakhtomin, Yuri
and Smirnov, Konstantin
and Kaurova, Nataliya
and Goltsman, Gregory",
title="Superconducting hot-electron-bolometer mixers for the mid-IR",
journal="Rus. J. Radio Electron.",
year="2017",
number="10",
optkeywords="IR NbN HEB mixers",
abstract="The work presents the result of development of the NbN superconducting hot-electron-bolometer (HEB) mixer. The sensitive element of the mixer is directly coupled to mid-IR radiation, and doesn{\textquoteright}t have planar metallic antenna. Investigations of noise characteristics of NbN HEB mixer were performed at the frequency 28.4 THz ($\lambda$ = 10.6 {\textmu}m) by using gas-discharge CW CO2-laser without consideration of optical and electrical losses in the heterodyne receiver. The noise temperature of NbN HEB mixer with the size of the sensitive element 10 {\textmu}m {\texttimes} 10 {\textmu}m was 2320 K ({\textasciitilde} 1.5h$\nu$/kB) at the heterodyne frequency of 28.4 THz. The noise temperature was determined by measuring the Y-factor taking into account the term which describes fluctuations of zero-point oscillations in accordance with the fluctuation-dissipation theorem of Calle-Welton. Isothermal method was used to estimate the absorbed heterodyne radiation power which was 9 {\textmu}W at the optimal operating point for the minimum noise temperature of NbN HEB mixer.",
optnote="http://jre.cplire.ru/jre/oct17/9/abstract.html (Russian) Гетеродинный приемник со сверхпроводниковым смесителем на эффекте электронного разогрева для среднего инфракрасного диапазона",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1747), last updated on Sun, 04 Jul 2021 16:42:11 -0500",
issn="1684-1719",
opturl="http://jre.cplire.ru/jre/oct17/9/abstract_e.html",
language="Russian"
}