Pixelated metasurfaces for linear-polarization conversion and absorption
Terahertz metasurfaces with pixelated meta-atoms were designed for linear-polarization conversion and absorption. The differences between the two functionalities emerged from the number and arrangement of metal-dielectric combos patching some but not necessarily every pixel of each meta-atom. A patching arrangement for a meta-atom with 3 x 3 pixels yielded polarization conversion ratio (PCR) > 0.9 over the 10.20–16.08 THz band, whereas another yielded absorptance (A) > 0.9 over the 27.67–28.73 THz band. A third patching arrangement delivered both functionalities, albeit in different spectral regimes: high PCR and high A at 13.92 THz and 29.1 THz, respectively. The spatial profiles of the electric and magnetic fields in each meta-atom suffice to explain the display of these functionalities. The generality of the pixelated meta-atom approach was supported by a meta-atom with 4 x 4 pixels.
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Work Title Pixelated metasurfaces for linear-polarization conversion and absorption Access Creators - Rajan Agrahari
- Akhlesh Lakhtakia
- Pradip Kumar Jain
- Somak Bhattacharyya
Keyword - Metasurface
- Pixelated meta-atom
- Absorber
- Polarization converter
License In Copyright (Rights Reserved) Work Type Article Publisher - Journal of Electromagnetic Waves and Applications
Publication Date November 2, 2022 Publisher Identifier (DOI) - https://doi.org/10.1080/09205071.2021.1998928
Deposited July 26, 2022 Versions
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Agrahari_21_1v21B.pdf -
Added Creator Rajan Agrahari
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Added Creator Akhlesh Lakhtakia
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Added Creator Pradip Kumar Jain
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Added Creator Somak Bhattacharyya
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Updated Keyword, Description, Publication Date Show ChangesKeywordDescription
- Metasurface, Pixelated meta-atom, Absorber, Polarization converter
Publication Date<p>Terahertz metasurfaces with pixelated meta-atoms were designed for linear-polarization conversion and absorption. The differences between the two functionalities emerged from the number and arrangement of metal-dielectric combos patching some but not necessarily every pixel of each meta-atom. A patching arrangement for a meta-atom with (Formula presented.) pixels yielded polarization conversion ratio (PCR) (Formula presented.) over the 10.20–16.08 THz band, whereas another yielded absorptance (A) (Formula presented.) over the 27.67–28.73 THz band. A third patching arrangement delivered both functionalities, albeit in different spectral regimes: high PCR and high A at 13.92 THz and 29.1 THz, respectively. The spatial profiles of the electric and magnetic fields in each meta-atom suffice to explain the display of these functionalities. The generality of the pixelated meta-atom approach was supported by a meta-atom with (Formula presented.) pixels.</p>- <p>Terahertz metasurfaces with pixelated meta-atoms were designed for linear-polarization conversion and absorption. The differences between the two functionalities emerged from the number and arrangement of metal-dielectric combos patching some but not necessarily every pixel of each meta-atom. A patching arrangement for a meta-atom with 3 x 3 pixels yielded polarization conversion ratio (PCR) > 0.9 over the 10.20–16.08 THz band, whereas another yielded absorptance (A) > 0.9 over the 27.67–28.73 THz band. A third patching arrangement delivered both functionalities, albeit in different spectral regimes: high PCR and high A at 13.92 THz and 29.1 THz, respectively. The spatial profiles of the electric and magnetic fields in each meta-atom suffice to explain the display of these functionalities. The generality of the pixelated meta-atom approach was supported by a meta-atom with 4 x 4 pixels.</p>
2022-01-01- 2022-11-02
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Updated