Unit structure of polarization insensitive topological insulator electromagnetically-induced transparent material

Abstract

The invention relates to a unit structure of a tunable graphene artificial surface polarization insensitive topological insulator electromagnetically-induced transparent material. The structure comprises a dielectric layer and a topological insulator body; and the front side of the dielectric layer is coated with the topological insulator body. The topological insulator body is of a square shape,the dielectric layer is of a rectangle shape, and a material of the topological insulator body is bismuth selenide. The unit structure has a polarization insensitive electromagnetically-induced transparent phenomenon, and is simple in structure, simple in machining process, small in size and applicable to preparation of a micro device.

Description

technical field

[0001] The invention relates to the technical field of two-dimensional materials, in particular to a unit structure of a polarization-insensitive topological insulator electromagnetically induced transparent material. Background technique

[0002] The electromagnetic induction transparency effect is a quantum interference effect between the electromagnetic field and the atomic energy level system during the interaction between the material medium and the electromagnetic field. This effect can lead to a transparent peak in the transmission spectrum at the resonant excitation frequency of the transmission spectrum. However, rigorous experimental conditions in atomic systems, such as coherent high-intensity pumping and cryogenic temperatures, greatly limit its performance and further research. In order to break through this limitation, people have paid attention to the analogy of the EIT effect in metamaterials in recent years, thereby extending the limitation ...

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