2020
DOI: 10.3390/cryst10090726
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Polarization Control with Helical Metasurfaces

Abstract: The ability to fully control the polarization of light using chiral metadevices has drawn considerable attention in various applications of integrated photonics, communication systems, and life sciences. In this work, we propose a comprehensive approach for the design of metasurfaces with desired polarization properties for reflected and transmitted waves based on the proper spatial arrangement of chiral inclusions in the unit cell. Polarization conversion is achieved by engineering induced electric and magnet… Show more

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Cited by 7 publications
(5 citation statements)
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“…Although the proposed unit cell has almost isotropic geometry, the reflected EM wave include the co-and cross-polarized reflection components (Faniayeu et al, 2020;, which can be quantified as follows:…”
Section: Theoretical and Numerical Analysismentioning
confidence: 99%
See 1 more Smart Citation
“…Although the proposed unit cell has almost isotropic geometry, the reflected EM wave include the co-and cross-polarized reflection components (Faniayeu et al, 2020;, which can be quantified as follows:…”
Section: Theoretical and Numerical Analysismentioning
confidence: 99%
“…Therefore, the absorptivity can be expressed by A ( ω ) = 1 − R ( ω ) = 1 − | S 11 | 2 . Although the proposed unit cell has almost isotropic geometry, the reflected EM wave include the co‐ and cross‐polarized reflection components (Faniayeu et al., 2020; S. J. Li et al., 2020), which can be quantified as follows: R(ω)=false|S11|2=false|Rxx|2+false|Ryx|2=false|S11,xx|2+false|S11,yx|2, $R(\omega )=\vert {S}_{11}{\vert }^{2}=\vert {R}_{xx}{\vert }^{2}+\vert {R}_{yx}{\vert }^{2}=\vert {S}_{11,xx}{\vert }^{2}+\vert {S}_{11,yx}{\vert }^{2},$ where the co‐ and cross‐polarized components are represented by xx and yx , respectively. Therefore, the absorption can be calculated by A(ω)=1R(ω)=1false|S11,xx|2false|S11,yx|2. $A(\omega )=1-R(\omega )=1-\vert {S}_{11,xx}{\vert }^{2}-\vert {S}_{11,yx}{\vert }^{2}.$ …”
Section: Theoretical and Numerical Analysismentioning
confidence: 99%
“…Successive evolutions and extensions of wire metamaterials have emerged and have been reported in the last decade. Three-dimensional designs based on cells including non-connected helical wires are noteworthy in exploiting chirality, such as the one in [129] or that in [130]. The latter considered helical elements with exotic orientations and combinations in order to enhance the chiral properties.…”
Section: Designsmentioning
confidence: 99%
“…Electromagnetic (EM) wave manipulation has become essential for many polarizationsensitive applications in the microwave, millimeter wave, and optical fields, including in regard to absorbers, lenses, cloaking devices, and polarization converters [1][2][3][4][5]. In general, there are two types of polarization conversion mechanism.…”
Section: Introductionmentioning
confidence: 99%