Scientific article
Open access

Evanescent-Field-Induced Second Harmonic Generation by Noncentrosymmetric Nanoparticles

Published inOptics express, vol. 18, no. 22, 23218
Publication date2010

We demonstrate the excitation of second harmonic radiation of noncentrosymmetric nanoparticles dispersed on a planar optical waveguide by the evanescent field of the guided mode. Polarization imaging reveals information on the orientation of the crystal axis of individual nanoparticles. Interference patterns generated from adjacent particles at the second harmonic frequency are - to the authors knowledge - observed for the first time. The actual form of the interference pattern is explained on the basis of a dipole radiation model, taking into account the nanoparticles' orientation, surface effects, and the characteristics of the imaging optics.

  • Waveguides
  • Harmonic generation and mixing
  • Subwavelength structures
  • Nanostructures
Citation (ISO format)
BÄUMNER, Ronja et al. Evanescent-Field-Induced Second Harmonic Generation by Noncentrosymmetric Nanoparticles. In: Optics express, 2010, vol. 18, n° 22, p. 23218. doi: 10.1364/OE.18.023218
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Article (Published version)
ISSN of the journal1094-4087

Technical informations

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