@InProceedings{Tarkhov_etal2006,
author="Tarkhov, M.
and Morozov, D.
and Mauskopf, P.
and Seleznev, V.
and Korneev, A.
and Kaurova, N.
and Rubtsova, I.
and Minaeva, O.
and Voronov, B.
and Goltsman, G.",
title="Single photon counting detector for THz radioastronomy",
booktitle="Proc. 17$^{th}$ Int. Symp. Space Terahertz Technol.",
year="2006",
pages="119--122",
optkeywords="NbN SSPD; SNSPD",
abstract="In this paper we present the results of the research on the superconducting NbN-ultrathin-film single- photon detectors (SSPD) which are capable to detect single quanta in middle IR range. The detection mechanism is based on the hotspot formation in quasi-two-dimensional superconducting structures upon photon absorption. Spectral measurements showed that up to 5.7 gm wavelength (52 THz) the SSPD exhibits single-photon sensitivity. Reduction of operation temperature to 1.6 K allowed us to measure quantum efficiency of -4{\%} at 60 THz. Although further decrease of the operation temperature far below 1 K does not lead to any significant increase of quantum efficiency. We expect that the improvement of the SSPD{\textquoteright}s performance at reduced operation temperature will make SSPD a practical detector with high characteristics for much lower THz frequencies as well.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1438), last updated on Mon, 24 May 2021 23:36:07 -0500",
opturl="https://www.nrao.edu/meetings/isstt/2006.shtml"
}