| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1817746 | Physica C: Superconductivity and its Applications | 2013 | 4 Pages |
By use of a recently developed multi-scale simulation method, we re-investigate terahertz wave emission with motions of Josephson vortices, as a possible mechanism for enhancing the emitted power. Results show that there appears a strong wave emission around the n = 2 cavity mode (one-wavelength mode), when motions of vortices and cavity modes are resonate.
► Magnetic field H-dependence of the terahertz wave emission is investigated. ► There are strong emissions in the cavity modes of the π− and 2π-mode. ► The phase state of the π-mode is π-kink like, while that of 2π-mode changes with H. ► Near one flux per junction, a coherent in-phase vortex lattice state is realized. ► A strong emission is induced by synchronization of the vortex motion and cavity mode.
