Symmetry-Selective Third-Harmonic Generation from Plasmonic Metacrystals

Shumei Chen, Guixin Li, Franziska Zeuner, Wing Han Wong, Edwin Yue Bun Pun, Thomas Zentgraf, Kok Wai Cheah, and Shuang Zhang
Phys. Rev. Lett. 113, 033901 – Published 16 July 2014
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Abstract

Nonlinear processes are often governed by selection rules imposed by the symmetries of the molecular configurations. The most well-known examples include the role of centrosymmetry breaking for the generation of even harmonics, and the selection rule related to the rotational symmetry in harmonic generation for fundamental beams with circular polarizations. While the role of centrosymmetry breaking in second harmonic generation has been extensively studied in plasmonic systems, the investigation of selection rules pertaining to circular polarization states of harmonic generation is limited to crystals, i.e., symmetries at the atomic level. In this Letter we demonstrate the rotational symmetry dependent third harmonic generation from nonlinear plasmonic metacrystals. We show that the selection rule can be imposed by the rotational symmetry of metacrystals embedded into an isotropic organic nonlinear thin film. The results presented here may open new avenues for designing symmetry-dependent nonlinear optical responses with tailored plasmonic nanostructures.

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  • Received 26 March 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.033901

© 2014 American Physical Society

Authors & Affiliations

Shumei Chen1,2, Guixin Li1,2, Franziska Zeuner3, Wing Han Wong4, Edwin Yue Bun Pun4, Thomas Zentgraf3,*, Kok Wai Cheah2,†, and Shuang Zhang1,‡

  • 1School of Physics & Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom
  • 2Department of Physics, Hong Kong Baptist University, Kowloon Tong, Hong Kong
  • 3Department of Physics, University of Paderborn, Warburger Straße 100, D-33098 Paderborn, Germany
  • 4Department of Electronic Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong

  • *thomas.zentgraf@uni-paderborn.de
  • kwcheah@hkbu.edu.hk
  • s.zhang@bham.ac.uk

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Issue

Vol. 113, Iss. 3 — 18 July 2014

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