Local phase method for designing and optimizing metasurface devices

Hsu, Liyi; Dupré, Matthieu; Ndao, Abdoulaye; Yellowhair, Julius; Kanté, Boubacar

doi:10.1364/OE.25.024974

Title: Local phase method for designing and optimizing metasurface devices

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Abstract

Metasurfaces have attracted significant attention due to their novel designs for flat optics. However, the approach usually used to engineer metasurface devices assumes that neighboring elements are identical, by extracting the phase information from simulations with periodic boundaries, or that near-field coupling between particles is negligible, by extracting the phase from single particle simulations. This is not the case most of the time and the approach thus prevents the optimization of devices that operate away from their optimum. Here, we propose a versatile numerical method to obtain the phase of each element within the metasurface (meta-atoms) while accounting for near-field coupling. Quantifying the phase error of each element of the metasurfaces with the proposed local phase method paves the way to the design of highly efficient metasurface devices including, but not limited to, deflectors, high numerical aperture metasurface concentrators, lenses, cloaks, and modulators.

Authors:: Hsu, Liyi; Dupré, Matthieu; Ndao, Abdoulaye; Yellowhair, Julius; Kanté, Boubacar

Publication Date:: Mon Oct 02 00:00:00 EDT 2017

Research Org.:: Univ. of California, San Diego, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1395929

Alternate Identifier(s):: OSTI ID: 1833571

Grant/Contract Number:: EE0007341

Resource Type:: Published Article

Journal Name:: Optics Express

Additional Journal Information:: Journal Name: Optics Express Journal Volume: 25 Journal Issue: 21; Journal ID: ISSN 1094-4087

Publisher:: Optical Society of America

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Metamaterials; Thin films; Concentrators; Numerical approximation and analysis

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                    Hsu, Liyi, Dupré, Matthieu, Ndao, Abdoulaye, Yellowhair, Julius, and Kanté, Boubacar. Local phase method for designing and optimizing metasurface devices.  United States: N. p., 2017. 
Web.  doi:10.1364/OE.25.024974.

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                    Hsu, Liyi, Dupré, Matthieu, Ndao, Abdoulaye, Yellowhair, Julius, & Kanté, Boubacar. Local phase method for designing and optimizing metasurface devices.  United States.  https://doi.org/10.1364/OE.25.024974

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                    Hsu, Liyi, Dupré, Matthieu, Ndao, Abdoulaye, Yellowhair, Julius, and Kanté, Boubacar. Mon .  
"Local phase method for designing and optimizing metasurface devices".  United States.  https://doi.org/10.1364/OE.25.024974.

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@article{osti_1395929,

  title        = {Local phase method for designing and optimizing metasurface devices},

  author       = {Hsu, Liyi and Dupré, Matthieu and Ndao, Abdoulaye and Yellowhair, Julius and Kanté, Boubacar},

  abstractNote = {Metasurfaces have attracted significant attention due to their novel designs for flat optics. However, the approach usually used to engineer metasurface devices assumes that neighboring elements are identical, by extracting the phase information from simulations with periodic boundaries, or that near-field coupling between particles is negligible, by extracting the phase from single particle simulations. This is not the case most of the time and the approach thus prevents the optimization of devices that operate away from their optimum. Here, we propose a versatile numerical method to obtain the phase of each element within the metasurface (meta-atoms) while accounting for near-field coupling. Quantifying the phase error of each element of the metasurfaces with the proposed local phase method paves the way to the design of highly efficient metasurface devices including, but not limited to, deflectors, high numerical aperture metasurface concentrators, lenses, cloaks, and modulators.},

  doi          = {10.1364/OE.25.024974},

  journal      = {Optics Express},

  number       = 21,

  volume       = 25,

  place        = {United States},

  year         = {Mon Oct 02 00:00:00 EDT 2017},

  month        = {Mon Oct 02 00:00:00 EDT 2017}

}

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