Stern, J. A. and LeDuc, H. G. and Zmuidzinas, J. (1993) Quasi-optical Josephson-junction oscillator arrays. IEEE Transactions on Applied Superconductivity, 3 (1). pp. 2495-2488. ISSN 1051-8223 http://resolver.caltech.edu/CaltechAUTHORS:STEieeetas93
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Josephson junctions are natural voltage-controlled oscillators capable of generating submillimeter-wavelength radiation, but a single junction usually can produce only 100 nW of power and often has a broad spectral linewidth. We are investigating two-dimensional quasi-optical power combining arrays of 10^3 and 10^4 NbN/MgO/NbN and Nb/Al-AlO/Nb junction to overcome these limitations. The junctions are DC biased in parallel and are distributed along interdigitated lines. The arrays couple to a resonant mode of a Fabry-Perot cavity to achieve mutual phase-locking. Devices have been produced, and the I-V characteristics of these arrays have been measured, but not as of now in the Fabry-Perot cavity. In this paper, the important features of the design and the critical device properties are discussed.
|Additional Information:||© Copyright 1993 IEEE. Reprinted with permission. Manuscript received August 24th, 1992. This work was supported by a Caltech President's Fund. We would also like to thank Rich Muller and Paul Maker for writing the e-beam lithography patterns.|
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|Deposited On:||23 Dec 2006|
|Last Modified:||26 Dec 2012 09:25|
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