High-efficiency second harmonic generation from a single hybrid Zno nanowire/au plasmonic nano-oligomer

Gustavo Grinblat, Mohsen Rahmani, Emiliano Cortés, Martín Caldarola, David Comedi, Stefan A. Maier, Andrea V. Bragas

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94 Citations (Scopus)


We introduce a plasmonic-semiconductor hybrid nanosystem, consisting of a ZnO nanowire coupled to a gold pentamer oligomer by crossing the hot-spot. It is demonstrated that the hybrid system exhibits a second harmonic (SH) conversion efficiency of μ3 × 10-5%, which is among the highest values for a nanoscale object at optical frequencies reported so far. The SH intensity was found to be μ1700 times larger than that from the same nanowire excited outside the hot-spot. Placing high nonlinear susceptibility materials precisely in plasmonic confined-field regions to enhance SH generation opens new perspectives for highly efficient light frequency up-conversion on the nanoscale.

Original languageEnglish
Pages (from-to)6660-6665
Number of pages6
JournalNano Letters
Issue number11
Publication statusPublished - 12 Nov 2014
Externally publishedYes


  • field enhancement
  • photonic-plasmonic coupling
  • Plasmonic nano-oligomer
  • second harmonic generation (SHG)
  • ZnO nanowire

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