Emission of continuous coherent terahertz waves with tunable frequency by intrinsic Josephson junctions

Details Emission of continuous coherent terahertz waves with tunable frequency by intrinsic Josephson junctions Emission of continuous coherent terahertz waves with tunable frequency by intrinsic Josephson junctions

2004-07-02

arxiv.org/abs/cond-mat/0407052v1

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.71.134515

We present a mechanism for emission of electromagnetic terahertz waves by simulation. High $T_{c}$ superconductors form naturally stacked Josephson junctions. When an external current and a magnetic field are applied to the sample, fluxon flow induces voltage. The voltage creates oscillating current through the Josephson effect and the current excites the Josephson plasma. The sample works as a cavity, and the input energy is stored in a form of standing wave of the Josephson plasma. A part of the energy is emitted as terahertz waves.

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