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Pixelated metasurfaces for linear-polarization conversion and absorption.
- Source :
-
Journal of Electromagnetic Waves & Applications . May2022, Vol. 36 Issue 7, p1008-1019. 12p. - Publication Year :
- 2022
-
Abstract
- 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 × 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 × 4 pixels. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ABSORPTION
*MAGNETIC fields
*ELECTRIC fields
*PIXELS
Subjects
Details
- Language :
- English
- ISSN :
- 09205071
- Volume :
- 36
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Journal of Electromagnetic Waves & Applications
- Publication Type :
- Academic Journal
- Accession number :
- 155970455
- Full Text :
- https://doi.org/10.1080/09205071.2021.1998928