Time-modulated meta-atoms

Research output: Contribution to journalArticleScientificpeer-review

47 Downloads (Pure)

Abstract

Interaction of electromagnetic radiation with time-variant objects is a fundamental problem whose study involves foundational principles of classical electrodynamics. Such study is a necessary preliminary step for delineating the novel research field of linear time-varying metamaterials and metasurfaces. A closer look to the literature, however, reveals that this crucial step has not been addressed and important simplifying assumptions have been made. Before proceeding to studies of linear time-varying metamaterials and metasurfaces with their effective parameters, we need to rigorously describe the electric and magnetic responses of a temporally modulated meta-atom. Here, we introduce a theoretical model which describes a time-variant meta-atom and its interaction with incident electromagnetic waves in time domain. The developed general approach is specialized for a dipole emitter/scatterer loaded with a time-varying reactive element. We confirm the validity of the theoretical model with full-wave simulations. Our study is of major significance also in the area of nanophotonics and nano-optics because the optical properties of all-dielectric and plasmonic nanoparticles can be varied in time in order to achieve intriguing scattering phenomena.
Original languageEnglish
Pages (from-to)023014
Number of pages11
JournalPHYSICAL REVIEW RESEARCH
Volume1
Issue number2
DOIs
Publication statusPublished - Sep 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • Light-matter interaction
  • Plasmonics
  • Metamaterials
  • Nanoantennas
  • Photonics

Fingerprint Dive into the research topics of 'Time-modulated meta-atoms'. Together they form a unique fingerprint.

  • Cite this