Strongly coupled terahertz plasmonic metamaterials

The goal of this study is to investigate the effect of plasmon induced transparency (PIT) in plasmonic metamaterials resonating in the terahertz regime. Such terahertz metamaterials were fabricated using conventional optical photolithography techniques. Terahertz time-domain spectroscopy was used to characterize the spectral responses of the plasmonic metamaterials. Numerical simulations were carried out to verify the experimental studies.;The main findings in this research are that the PIT effect can be realized in plasmonic metamaterials in the terahertz regime due to resonance coupling between the supperradiant and subradiant resonators. Also, the PIT effect can be controlled by changing the geometry parameters of the structure, the angles of the incident light, the vertical distance between the supperradiant and subradiant resonators, and the angle of the supperradiant and subradiant resonators.