1 October 1991 High order harmonic mixing up to 2.5 THz using thin film Josephson tunnel junctions
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Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 15765F (1991) https://doi.org/10.1117/12.2297908
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland
Abstract
Thin film niobium nitride Josephson tunnel junctions have been used as harmonic mixers in experiments to measure the frequency of various submillimetre wavelength laser lines.

The Josephson junctions were used as harmonic mixers with an 18-40 GHz microwave synthesiser providing the local oscillator signal. Harmonics up to the 140th of ∼18 GHz, generated within the junction, mixed with optically pumped laser lines up to 2.5 THz to produce output signals around 20 MHz.

Results of frequency measurements and data on the performance of the mixing system, including signal to noise ratios and frequency response, will be presented.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. C. Wicks, "High order harmonic mixing up to 2.5 THz using thin film Josephson tunnel junctions", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15765F (1 October 1991); doi: 10.1117/12.2297908; https://doi.org/10.1117/12.2297908
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