Pixelated metasurfaces for linear-polarization conversion and absorption

Rajan Agrahari, Akhlesh Lakhtakia, Pradip Kumar Jain, Somak Bhattacharyya

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

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 (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.

Original languageEnglish (US)
Pages (from-to)1008-1019
Number of pages12
JournalJournal of Electromagnetic Waves and Applications
Volume36
Issue number7
DOIs
StatePublished - 2022

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • General Physics and Astronomy
  • Electrical and Electronic Engineering

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