Enhancement of Diffraction Efficiency Based on the Addition Principle of Coded Digital Gratings

Jing, Xufeng; Tang, Xiaoyan; Tian, Ying; Kong, Zhe; Li, Chenxia; Shen, Changyu; Hong, Zhi

doi:10.1109/jlt.2021.3119380

Cited by 7 publications

(1 citation statement)

References 38 publications

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“…Then study the diffraction efficiency of metasurface devices, the diffraction efficiency involved in this paper can be obtained by calculating the ratio of the power flow of the beam transformed by the all‐dielectric metasurface to the power flow of the incident beam. Power flow is a far‐field observable value defined by the time‐averaged radiant flux per unit area (the time‐averaged magnitude of the Poynting vector) over configured distances, [ 86,87 ] i.e.

\begin{equation}P = \langle E_{{\mathrm{far}}} \times H_{{\mathrm{far}}} \rangle {\mathrm{avg}}\end{equation}

…”

Section: Design and Principle Of Multifunctional Metasurfacementioning

confidence: 99%

Flexible Control of Phase and Polarization based on All‐Dielectric Metamaterials

Zhang

et al. 2023

Adv Quantum Tech

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A metasurface is a planar structure that can flexibly control the polarization, phase, and amplitude of incident electromagnetic waves. An all‐dielectric hexagonal cell structure to reduce the interaction between cells and achieve efficient parametric regulation of electromagnetic waves is proposed. The single resonant transmission phase and the geometric phase are superimposed to realize the composite phase unit structure and construct a multifunctional flat metasurface device. The designed metasurface can flexibly tune the phase and polarization of incident electromagnetic waves and enable multifunctional integration phenomena, such as polarization separation, light intensity convergence, and vector light generation, on a single metasurface.

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