THz Generation Using Fluxon Dynamics in High Temperature Superconductors

N. F. Pedersen and S. Madsen

Abstract—We consider THz emission due to fluxondynamics in a stack of inductively coupled longJosephson junctions connected electrically to a resonant cavity. By comparing to experiments on Josephson junction parametric amplifiers we consider the role of a negative resistance inconnection with THz emission experiments. We suggest that indeed the negative resistance has a big influence on the experimentalr esults.

Index Terms—THz oscillator, negative resistance, BSCCO

Manuscript received August 17,2008.
Stimulating discussions with K.Kadowaki, U. Welp, X. Huand Zhiseng Lin are greatly acknowledged.
N.F.Pedersen is with Oersted-DTU, Section of Electric Power Engineering, The Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark.S. Madsen is with the Department of Chemistry, University of Aarhus, DK-8000 Aarhus, Denmark

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