@Article{Kawamura_etal1996, author="Kawamura, J. and Blundell, R. and Tong, C. yu E. and Gol{\textquoteright}tsman, G. and Gershenzon, E. and Voronov, B.", title="Performance of NbN lattice-cooled hot-electron bolometric mixers", journal="J. Appl. Phys.", year="1996", volume="80", number="7", pages="4232--4234", optkeywords="NbN HEB mixers", abstract="The heterodyne performance of lattice-cooled hot-electron bolometric mixers is measured at 200 GHz. Superconducting thin-film niobium nitride strips with \~{}5 nm thickness are used as waveguide mixer elements. A double-sideband receiver noise temperature of 750 K at 244 GHz is measured at an intermediate frequency centered at 1.5 GHz with 500 MHz bandwidth and with 4.2 K device temperature. The instantaneous bandwidth for this mixer is 1.6 GHz. The local oscillator power required by the mixer is about 0.5 $\mu$W. The mixer is linear to within 1 dB up to an input power level 6 dB below the local oscillator power. A receiver incorporating a hot-electron bolometric mixer was used to detect molecular line emission in a laboratory gascell. This experiment unambiguously confirms that the receiver noise temperature determined from Y-factor measurements reflects the true heterodyne sensitivity.", optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1607), last updated on Wed, 26 May 2021 11:07:20 -0500", issn="0021-8979", doi="10.1063/1.363304", opturl="http://aip.scitation.org/doi/10.1063/1.363304", opturl="https://doi.org/10.1063/1.363304" }