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Author Wallraff, A. ♦ Goldobin, E. ♦ Ustinov, A. V.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ JOSEPHSON JUNCTIONS ♦ COHERENT RADIATION ♦ FLUX QUANTIZATION ♦ OSCILLATORS ♦ MAGNETIC FLUX ♦ COMPUTERIZED SIMULATION ♦ HARMONICS ♦ DYNAMICS ♦ FLUX FLOW
Abstract The numerical investigation of the radiation emission by a system of two magnetically coupled, long Josephson junctions is reported. Time-dependent synchronized voltage response in the flux-flow regime is analyzed for the case of in-phase and out-of-phase oscillations in the junctions. Simulations show that Josephson junctions operating in the in-phase flux-flow mode may generate rf radiation power by a factor of more than 4 larger than that of a single Josephson junction. The radiation in the out-of-phase flux-flow mode is characterized by nearly completely suppressed amplitudes of odd harmonics and considerably damped even harmonics as compared to that of a single barrier junction. The dependence of the radiation power on the parameter spread between the junctions is investigated. The advantages of using stacked Josephson junctions as oscillators for the sub-mm wave band are discussed. {copyright} {ital 1996 American Institute of Physics.}
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-12-01
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 80
Issue Number 11


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