Dipolar second order nonlinear effects from gold nano-antennas by controlling radiation phase

Research output: Contribution to conference (unpublished)Paper


  • Sylvain D Gennaro
  • Giannini Vincenzo
  • Themistoklis P H Sidiropoulos
  • Stefan A. Maier
  • Rupert F. Oulton

Colleges, School and Institutes

External organisations

  • Imperial College London


A recurring theme in nanophotonics is the ability of metal nanostructures to imbue artificial materials with new function. Here we explore metallic nano-antennas as the building blocks of second order nonlinear optical metamaterials. While nonlinear effects in natural materials must gradually accumulate weak nonlinearity across macroscopic crystal dimensions, a small volume of metamaterial, and even isolated antennas, can create surprisingly strong effects. We show that the nonlinear selection rules that typically prevent dipolar SHG from nano-antennas can be engineered so they effectively radiate SHG. This provides access to other second order optical processes, which we have recently observed.


Original languageEnglish
Publication statusPublished - Aug 2017
EventSPIE: Optics + Photonics: Nanoscience + Engineering 2017: Active Photonic Platforms IX - San Diego Convention Center, San Diego, California, United States
Duration: 6 Aug 201710 Aug 2017


ConferenceSPIE: Optics + Photonics: Nanoscience + Engineering 2017
CountryUnited States
CitySan Diego, California


  • nanoantenna, plasmonic, harmonic generation