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

Abstract

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.

4 pages, 5 figures

References in corpus (1)

• Dynamic structure selection and instabilities of driven Josephson lattice in high-temperature superconductors

Cited by in corpus (26)

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• Phase Dynamics in Intrinsic Josephson Junctions and its Electrodynamics
• The origin of flux-flow resistance oscillations in BiSrCaCuO: Fiske steps in a single junction?
• Stationary phase-kink states and dynamical phase transitions controlled by surface impedance in THz wave emission from intrinsic Josephson junctions
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• Shunt-capacitor-assisted synchronization of oscillations in intrinsic Josephson junctions stack
• Terahertz Radiation Power Characterization and Optimization of Stack of Intrinsic Josephson Junctions
• Direct observation of quantized interlayer vortex flow and vortex pinning distribution in high-Tc La_(1.87)Sr_(0.13)CuO_4 single crystals
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