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Gerecht E, Musante CF, Yngvesson KS, Waldman J, Gol'tsman GN, Yagoubov PA, et al. Optical coupling and conversion gain for NbN HEB mixer at THz frequencies. In: Proc. 4-th Int. Semicond. Device Research Symp.; 1997. p. 47–50.
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Gershenzon EM, Gol'tsman GN, Zorin MA, Karasik BS, Trifonov VA. Nonequilibrium and bolometric response of YBaCuO films in a resistive state to infrared low intensity radiation. In: Council on Low-temp. Phys.; 1994. p. 82–3.
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Blundell R, Kawamura JH, Tong CE, Papa DC, Hunter TR, Gol’tsman GN, et al. A hot-electron bolometer mixer receiver for the 680-830 GHz frequency range. In: Proc. 6-th Int. Conf. Terahertz Electron. IEEE; 1998. p. 18–20.
Abstract: We describe a heterodyne receiver designed to operate in the partially transparent atmospheric windows centered on 680 and 830 GHz. The receiver incorporates a niobium nitride thin film, cooled to 4.2 K, as the phonon-cooled hot-electron mixer element. The double sideband receiver noise, measured over the frequency range 680-830 GHz, is typically 700-1300 K. The instantaneous output bandwidth of the receiver is 600 MHz. This receiver has recently been used at the SubMillimeter Telescope, jointly operated by the Steward Observatory and the Max Planck Institute for Radioastronomy, for observations of the neutral carbon and CO spectral lines at 810 GHz and at 806 and 691 GHz respectively. Laboratory measurements on a second mixer in the same test receiver have yielded extended high frequency performance to 1 THz.
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