TY  - CONF
AU  - Tarkhov, M.
AU  - Morozov, D.
AU  - Mauskopf, P.
AU  - Seleznev, V.
AU  - Korneev, A.
AU  - Kaurova, N.
AU  - Rubtsova, I.
AU  - Minaeva, O.
AU  - Voronov, B.
AU  - Goltsman, G.
PY  - 2006
DA  - 2006//
TI  - Single photon counting detector for THz radioastronomy
T2  - Proc. 17[super:th] Int. Symp. Space Terahertz Technol.
BT  - Proc. 17[super:th] Int. Symp. Space Terahertz Technol.
SP  - 119
EP  - 122
KW  - NbN SSPD
KW  - SNSPD
AB  - 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's performance at reduced operation temperature will make SSPD a practical detector with high characteristics for much lower THz frequencies as well.
UR  - https://www.nrao.edu/meetings/isstt/2006.shtml
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1438), last updated on Mon, 24 May 2021 23:36:07 -0500
ID  - Tarkhov_etal2006
ER  -