ISSTT Proceedings

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The sensitivity and IF bandwidth of waveguide NbN Hot Electron Bolometer Mixer on MgO buffer layers over crystalline quartz

Authors:
D. Meledin, C-Y.E. Tong, R. Blundell, N. Kaurova, K. Smimov, B. Voronov, G. Goltsman
Abstract:
We have developed and characterized waveguide phonon-cooled NbN Hot Electron Bolometer (FMB) mixers fabricated from a 3-4 nm thick NbN film deposited on a 200nm thick MgO buffer layer over crystalline quartz. Double side band receiver noise temperatures of 900-1050 K at 1.035 THz, and 1300-1400 K at 1.26 THz have been measured at an intermediate frequency of 1.5 GHz. The intermediate frequency bandwidth, measured at 0.8 THz LO frequency, is 3.2 GHz at the optimal bias point for low noise receiver operation.
Categories:
Hot Electron Bolometers
Year:
2002
Session:
2
Full-text:
Download a PDF of this paper.
Page Number(s):
65-72