Invariant superoscillatory electromagnetic fields in 3D-space

K. G. Makris, D. G. Papazoglou, Stylianos Tzortzakis

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We derive exact solutions of Maxwell's equations based on superoscillatory superpositions of vectorial Bessel beams. These novel beams are diffraction-free and can support subwavelength features in their transverse electromagnetic fields, without the presence of any evanescent waves. These features can be propagated into the far field. Approximate solutions in closed form are also derived based on asymptotic expansions of Bessel functions for simple prescribed subwavelength patterns. The superoscillatory characteristics of both electric, magnetic field components (transverse and longitudinal), and the Poynting vector, as well as, the effect of nonparaxiality are systematically investigated.

Original languageEnglish
Article number014003
JournalJournal of Optics (United Kingdom)
Volume19
Issue number1
DOIs
Publication statusPublished - 1 Jan 2017

    Fingerprint

Keywords

  • subwavelength optics
  • superoscillations
  • vectorial Bessel beams

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this