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Polarization control coherent perfect absorber based on multilayer metamaterial

A polarization control and metamaterial technology, applied in electrical components, antennas, etc., can solve the problem of fixed working frequency band, unable to dynamically adjust the working frequency band, etc., to achieve the effect of convenient production, light weight and simple structure

Pending Publication Date: 2022-04-01
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0004] The above-mentioned perfect absorber based on metamaterials has a fixed working frequency band and cannot dynamically adjust the working frequency band

Method used

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  • Polarization control coherent perfect absorber based on multilayer metamaterial
  • Polarization control coherent perfect absorber based on multilayer metamaterial
  • Polarization control coherent perfect absorber based on multilayer metamaterial

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiments. The present invention will be further described in detail below with reference to the accompanying drawings and specific examples.

[0025] combine Figure 1 to Figure 6 , the invention adopts a multi-layer asymmetric split-ring metamaterial, and realizes the polarization-controlled coherent absorption of light in multiple frequency bands of the optical band. The polarization control coherent perfect absorber based on multilayer metamaterials is composed of two layers of metal asymmetric split rings and a dielectric layer between the two layers of asymmetric split rings. The two layers of metal asymmetric split rings are composed of It is composed of an inverted V-shaped metal wire and a U-shaped metal wire. The two-layer metal asymmetric split ring has the same structure and is symmetrically arranged along the dielectric layer. The signal light and the control light with t...

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Abstract

The invention provides a polarization control coherent perfect absorber based on multilayer metamaterials. The polarization control coherent perfect absorber comprises two layers of metal asymmetric split rings with openings and a dielectric layer between the two layers of metal asymmetric split rings with openings. The two layers of metal asymmetric split rings of the periodic structure are composed of an inverted V-shaped metal wire and a U-shaped metal wire, and the two layers of metal asymmetric split rings are the same in structure and are symmetrically arranged along the dielectric layer. The signal light and the control light which have the same polarization angle, amplitude and frequency are propagated oppositely in the direction perpendicular to the metamaterial layer. According to the invention, the operation is simple, and the absorption size of light with specific frequency can be controlled by adjusting the polarization direction of the control light and the signal light, controlling the phase of the light and the structure, size parameters and material attributes of the metamaterial. The device has the advantages of simple structure, convenience in operation, high efficiency and the like.

Description

technical field [0001] The invention relates to a polarization control coherent perfect absorber based on multilayer metamaterials, belonging to the fields of metamaterials and wave absorbers. Background technique [0002] With the continuous development of contemporary science and technology, absorbing technology plays an important role in many applications, such as photodetectors, electromagnetic stealth, bolometric thermometry, and optical switches. Since the perfect absorption properties of metamaterials have incomparable advantages over traditional electromagnetic materials, researchers have devoted a lot of energy to metamaterial perfect absorbers. [0003] Metamaterials are artificial composite materials with periodic unit structure with extraordinary electromagnetic properties. By artificially adjusting the geometric parameters of the unit structure, the electromagnetic function far exceeds that of natural materials. The electromagnetic response of a metamaterial is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00H01Q15/00
Inventor 陈明王天让王鹤轩成煜苑立波
Owner GUILIN UNIV OF ELECTRONIC TECH
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