An asymmetric multifunctional metamaterial polarization converter

Abstract

The invention belongs to the field of metamaterial polarization converters, and in particular relates to an asymmetric multifunctional metamaterial polarization converter, which comprises a first metasurface structure layer, a first dielectric layer, a second supersurface structure layer arranged in sequence from top to bottom The surface structure layer, the second dielectric layer and the underlying photosensitive silicon plate, the first metasurface structure layer is formed by a plurality of hexagonal-like resonators periodically arranged, and the photosensitive silicon block is embedded in the hexagonal-like resonator , alumina block, and diagonal alumina strips; the second metasurface structure layer is formed by periodic arrangement of a plurality of hexagonal opening resonators. The invention can convert forward and reverse incident electromagnetic waves into different polarization modes, and realize asymmetric multifunctional polarization conversion.

Description

technical field [0001] The invention belongs to the field of metamaterial polarization converters, and in particular relates to an asymmetric multifunctional metamaterial polarization converter. Background technique [0002] Amplitude, frequency, phase, and polarization are four important properties that characterize electromagnetic waves, where the polarization property is the vibration direction of the electric field on a plane perpendicular to the propagation direction of electromagnetic waves. Effectively controlling the polarization direction of electromagnetic waves is crucial for the utilization of electromagnetic waves. [0003] Metamaterials are composite materials that can be artificially synthesized according to actual needs. Since the scientist Veselago theoretically proposed a metamaterial in which electric fields, magnetic fields, and wave vectors obey the left-handed relationship in 1968, metamaterials have been extensively studied. By ingeniously designing m...

AI Technical Summary

Problems solved by technology

However, such metamaterial polarization converters can only work in a single function after fabrication, so in recent years, researchers have proposed many metamaterial polarization converters with multiple functions, and can be controlled by diodes or photosensitive switching materials. its function is regulated

However, the existing multifunctional metamaterial polarization converters can only work in one of the reflective or transmissive modes.

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