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All-dielectric transmission type metasurface all-phase modulator

A transmissive, metasurface technology, applied in the field of micro-nano optics, which can solve the problems of low structural fault tolerance, blocking partial particle transmission, and low transmittance of phase regulators.

Pending Publication Date: 2020-06-26
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an all-dielectric transmission type metasurface all-phase regulator, which aims to solve the defect of low structural tolerance in the discrete antenna array structure in the prior art, and block the transmission of some particles, thereby Technical problems leading to low transmittance of existing phase modulators

Method used

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  • All-dielectric transmission type metasurface all-phase modulator
  • All-dielectric transmission type metasurface all-phase modulator
  • All-dielectric transmission type metasurface all-phase modulator

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no. 1 example

[0021] see Figure 1 to Figure 5 , the present invention provides an all-dielectric transmission metasurface all-phase modulator 100, comprising a substrate 1, a coating 2 and periodically arranged particles 3; the coating 2 is fixedly connected to the substrate 1, and is located on the On one side of the substrate 1, the periodically arranged particles 3 are fixedly connected to the substrate 1 and located inside the coating 2; the periodically arranged particles 3 include horizontal arms 31 and vertical arms 32, the The horizontal arm 31 and the vertical arm 32 are fixedly connected to the substrate 1 and are located inside the coating 2. One end of the vertical arm 32 is fixedly connected to the horizontal arm 31, and the other end faces away from The direction of the horizontal arm 31 is T-shaped.

[0022] Further, the material of the horizontal arm 31 and the vertical arm 32 is GaAs, and the material of the coating 2 is BaF 2 , the material of the substrate 1 is SiO 2 ...

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Abstract

The invention discloses an all-dielectric transmission type metasurface all-phase modulator, and the all-phase modulator comprises periodically arranged particles, a coating and a substrate; the coating, the periodically arranged particles and the substrate are sequentially arranged in an overlapping manner from top to bottom; the periodically arranged particles comprise the horizontal arms and the vertical arms; the distribution of the transmission spectrum is observed by changing the length of the horizontal arm, and the length of the horizontal arm is finally determined, so the average transmittance of the obtained transmission spectrum is up to 80.3%, and therefore, the transmission efficiency can be higher by virtue of a simple structure, and 0-2pi phase regulation can be realized.

Description

technical field [0001] The invention relates to the field of micro-nano optics, in particular to an all-dielectric transmission metasurface all-phase regulator. Background technique [0002] At present, in the research and application of modern optics, metasurfaces have attracted more and more attention from researchers because of their ultrathin structures and the ability to precisely control electromagnetic fields. Metasurface is a special ultra-thin artificial electromagnetic metamaterial, which can flexibly and effectively control the phase, polarization mode, propagation mode and other characteristics of electromagnetic waves at the sub-wavelength scale, and then realize focused imaging, abnormal deflection, and perfect absorption. and polarization rotation. Compared with traditional "bulk metamaterials", metasurfaces have significant advantages of small size, thin thickness, easy preparation and integration, and at the same time, they are better at flexible and precis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 伍铁生刘智慧杨丹杨祖宁王学玉张慧仙王宜颖
Owner GUILIN UNIV OF ELECTRONIC TECH
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