Reference : Second harmonic hotspots at the edges of the unit cells in G-shaped gold nanostructures
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/132291
Second harmonic hotspots at the edges of the unit cells in G-shaped gold nanostructures
English
Valev, VK [Katholieke Universiteit Leuven - KUL > > > >]
Osley, EJ [University College London - UCL > > > >]
De Clercq, B [Universiteit Hasselt - UH > > > >]
Silhanek, Alejandro mailto [Université de Liège - ULg > Département de physique > Physique de la matière condensée >]
Warburton, PA [University College London - UCL > > > >]
Aktsipetrov, OA [Lomonosov Moscow State University - MSU > > > >]
Ameloot, M [Universiteit Hasselt - UH > > > >]
Moshchalkov, VV [Katholieke Universiteit Leuven - KUL > > > >]
Verbiest, T [Katholieke Universiteit Leuven - KUL > > > >]
2012
Proceedings of SPIE
International Society for Optical Engineering
8424
842411
Yes
International
0277-786X
1996-756X
Bellingham
WA
[en] plasmonics
[en] 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.
Researchers
http://hdl.handle.net/2268/132291

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