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Yazoubov P, Kroug M, Merkel H, Kollberg E, Gol'tsman G, Lipatov A, et al. Quasioptical NbN phonon-cooled hot electron bolometric mixers with low optimal local oscillator power. In: Proc. 9th Int. Symp. Space Terahertz Technol.; 1998. p. 131–40.
Abstract: In this paper, the noise perform.ance of NIN based phonon-cooled Hot Electron Bolometric (HEB) quasioptical mixers is investigated in the 0.55-1.1 THz frequency range. The best results of the DSB noise temperature are: 500 K at 640 GHz, 600 K at 750 GHz, 850 K at 910 GHz and 1250 K at 1.1 THz. The water vapor in the signal path causes a significant contribution to the measured noise temperature around 1.1 THz. The required LO power is typically about 60 nW. The frequency response of the spiral antenna+lens system is measured using a Fourier Transform Spectrometer with the HEB operating in a detector mode.
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Tetsu Suzuki, Chris Mann, Takanari Yasui, Hirotomo Fujishima, Koji Mizuno. Quasi–integrated planar Schottky barrier diodes for 2.5 THz receivers. In: Proc. 9th Int. Symp. Space Terahertz Technol.; 1998. 187.
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Svechnikov S, Verevkin A, Voronov B, Menschikov E, Gershenzon E, Gol'tsman G. Quasioptical phonon-cooled NbN hot electron bolometer mixers at 0.5-1.1 THz. In: Proc. 9th Int. Symp. Space Terahertz Technol.; 1998. p. 45–51.
Abstract: The noise performance of a receiver incorporating spiral antenna coupled NbN phonon-cooled superconducting hot electron bolometric mixer is measured from 450 GHz to 1200 GHz. The mixer element is thin (thickness nm) NbN 1.5 pm wide and 0.2 i.um long film fabricated by lift-off e-beam lithography on high-resistive silicon substrate. The noise of the receiver temperature is 1000 K at 800-900 GHz, 1200 K at 950 GHz, and 1600 K at 1.08 THz. The required (absorbed) local-oscillator power is —20 nW.
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Mann CM, Matheson DN, Ellison BN, Oldfield ML, Moyna BP, Spencer JJ, et al. On the design and measurement of a 2.5 THz waveguide mixer. In: Proc. 9th Int. Symp. Space Terahertz Technol.; 1998. 161.
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Maddison BJ, Martin RJ, Oldfield ML, Mann CM, Matheson DN, Ellison BN, et al. A compact 500 GHz planar schottky siode receiver with a wide instantaneous bandwidth. In: Proc. 9th Int. Symp. Space Terahertz Technol.; 1998. 367.
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