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Proceedings Paper

Second harmonic hotspots at the edges of the unit cells in G-shaped gold nanostructures
Author(s): Ventsislav K. Valev; Edward J. Osley; Ben De Clercq; Alejandro V. Silhanek; Paul A. Warburton; Oleg A. Aktsipetrov; Marcel Ameloot; Victor V. Moshchalkov; Thierry Verbiest
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Paper Abstract

We report our latest results on second harmonic generation (SHG) microscopy from arrays of G-shaped chiral gold nanostructures. The nanostructures are arranged in unit cells composed of four Gs, each rotated at 90° with respect to its neighbors. As it has already been demonstrated, for linearly polarized light, these unit cells yield a pattern of four SHG hotspots. However, upon increasing the pitch of the nanostructured arrays, extra hotspots can be observed at the edges of the unit cells. While the origin of these extra hotspots remains to be elucidated, their position indicates a relationship to coupling behavior between the unit cells.

Paper Details

Date Published: 1 May 2012
PDF: 8 pages
Proc. SPIE 8423, Metamaterials VII, 842311 (1 May 2012); doi: 10.1117/12.921523
Show Author Affiliations
Ventsislav K. Valev, Katholieke Univ. Leuven (Belgium)
Edward J. Osley, Univ. College London (United Kingdom)
Ben De Clercq, Univ. Hasselt (Belgium)
Alejandro V. Silhanek, Univ. de Liège (Belgium)
Paul A. Warburton, Univ. College London (United Kingdom)
Oleg A. Aktsipetrov, Lomonosov Moscow State Univ. (Russian Federation)
Marcel Ameloot, Univ. Hasselt (Belgium)
Victor V. Moshchalkov, Katholieke Univ. Leuven (Belgium)
Thierry Verbiest, Katholieke Univ. Leuven (Belgium)

Published in SPIE Proceedings Vol. 8423:
Metamaterials VII
Allan D. Boardman; Nigel P. Johnson; Richard W. Ziolkowski, Editor(s)

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