Giant Nonlinear Optical Activity of Achiral Origin in Planar Metasurfaces with Quadratic and Cubic Nonlinearities

Shumei Chen, Franziska Zeuner, Martin Weismann, Bernhard Reineke, Guixin LI, Ventsislav Kolev Valev, Kok Wai CHEAH, Nicolae Coriolan Panoiu, Thomas Zentgraf, Shuang Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

3D chirality is shown to be unnecessary for introducing strong circular dichroism for harmonic generations. Specifically, near-unity circular dichroism for both second-harmonic generation and third-harmonic generations is demonstrated on suitably designed ultrathin plasmonic metasurfaces with only 2D planar chirality. The study opens up new routes for designing chip-type biosensing platform, which may allow for highly sensitive detection of bio- and chemical molecules with weak chirality.

Original languageEnglish
Pages (from-to)2992-2999
Number of pages8
JournalAdvanced Materials
Volume28
Issue number15
DOIs
Publication statusPublished - 20 Apr 2016

Scopus Subject Areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

User-Defined Keywords

  • circular dichroism
  • metasurfaces
  • nonlinear optics
  • plasmonic

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