Second-Order Nonlinear Optical Properties of Plasmonic Nanostructures

Martti Kauranen (Corresponding author), Hannu Husu, Jouni Mäkitalo, Robert Czaplicki, Mariusz Zdanowicz, Joonas Lehtolahti, Janne Laukkanen, Markku Kuittinen

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleScientificpeer-review


We review our work on second-order nonlinear optical properties of plasmonic nanostructures. In order to achieve the required non-centrosymmetry of the structures, our samples consist of arrays of L-shaped nanoparticles and T-shaped nanodimers. The samples are investigated by polarization-dependent second-harmonic generation to address the tensorial nonlinear response. We show that the response can be strongly modified by symmetry-breaking defects and other deviations of the samples from ideal. Nonlinear sources localized to defects can also give rise to higher-multipolar emission. The defect problem is overcome with a recent and significant improvement in sample quality, allowing the dipole limit of the nonlinear response to be reached. This achievement opens the path towards plasmonic metamaterials with tailorable nonlinear properties. As a demonstration of this possibility, we modify the nonlinear response by the mutual arrangement of the L-shaped particles in the array. We will also summarize our numerical boundary-element method to describe the nonlinear response of nanoparticles.
Original languageEnglish
Title of host publicationPlasmonics
Subtitle of host publicationTheory and Applications
EditorsTigran V. Shahbazyan, Mark I. Stockman
Place of PublicationDordrecht
ISBN (Electronic)978-94-007-7805-4
ISBN (Print)978-94-007-7804-7, 978-94-024-0586-6
Publication statusPublished - 2013
MoE publication typeA3 Part of a book or another research book

Publication series

SeriesChallenges and Advances in Computational Chemistry and Physics


  • surface plasmon
  • nonlinear optics
  • second harmonic generation


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