Phase-coupled plasmon-induced transparency in metasurface with periodically arranged bimolecular systems

摘要

A plasmonic metasurface structure consisting of periodically arranged bimolecular units is proposed to realize PIT effect in a way that differ from traditional ways. A high transmission window can be realized by utilizing phase coupling between sub-resonances of the designed bimolecular system. Phase coupling which is benefit from the intense and stable sub-resonances plays an important role in the generation of PIT effect. In the designed metasurface structure, influence of some components on transmission can be eliminated by destructive interference of the phase. The designed metasurfaces can be used in manufacture of optical devices at near infrared region, and general principle has potential applications in terahertz and microwave bands.