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Semenov A, Il'yin K, Siegel M, Smirnov A, Pavlov S, Richter H, et al. Intermediate frequency bandwidth of a hot-electron mixer: Comparision with bolometric models. In: Proc. 17th Int. Symp. Space Terahertz Technol. Paris, France; 2006. p. 73–6.
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Tarkhov M, Morozov D, Mauskopf P, Seleznev V, Korneev A, Kaurova N, et al. Single photon counting detector for THz radioastronomy. In: Proc. 17th Int. Symp. Space Terahertz Technol.; 2006. p. 119–22.
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's performance at reduced operation temperature will make SSPD a practical detector with high characteristics for much lower THz frequencies as well.
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Yagoubov P, Hoogeveen R, Torgashin M, Khudchenko A, Koshelets V, Suttiwong N, et al. 550-650 GHz spectrometer development for TELIS. In: Proc. 17th Int. Symp. Space Terahertz Technol.; 2006. p. 338–41.
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