Numerical study for electromagnetic wave emission from intrinsic Josephson junction stacks with a dielectric cover

Electromagnetic (EM) wave emission from the intrinsic Josephson junction stacks (IJJ’s) covered with a thin dielectric medium is numerically investigated, using the multi-scale simulation method developed in our previous paper. It is shown that the power of emitted EM waves is considerably increased in the IJJ’s with a dielectric cover. The emission from the n = 2 resonance mode is greatly enhanced. The enhancement is caused by the excitation of a solitonic mode.

► Simulation of the THz emission from IJJ’s with a dielectric cover is performed.
► The emission power is increased by the dielectric cover.
► The n = 2 cavity mode is anomalously enhanced.