ISSTT Proceedings

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Quasioptical NbN Phonon-Cooled Hot Electron Bolometric Mixers with Low Optimal Local Oscillator Power

Authors:
P. Yagoubov, M. Kroug, H. Merkel, E. Kollberg, G. Gol'tsman, A. Lipatov, S. Svechnikov, E. Gershenzon
Abstract:
In this paper, the noise performance 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.
Categories:
HEB Mixers
Year:
1998
Session:
3
Full-text:
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Page Number(s):
131-140