Direct response of microstrip line coupled Nb THz hot-electron bolometer mixers

Ganzevles, W. F. M.; Gao, J. R.; de Korte, P. A. J.; Klapwijk, T. M.
October 2001
Applied Physics Letters;10/8/2001, Vol. 79 Issue 15, p2483
Academic Journal
We study the direct response of a superconducting Nb hot-electron bolometer mixer centered at 2.5 THz that incorporates an Au/SiO[sub 2]/Al microstrip transmission line. The direct response is studied using a Fourier transform spectrometer. We find a peak response at a frequency of 2.1 THz, which is 20% lower than predicted based on a model that neglects the inductance effect in the microbridge. © 2001 American Institute of Physics.


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