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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/13354

Title: The role of chiral local field enhancements below the resolution limit of Second Harmonic Generation microscopy
Authors: Valev, V.K.
Clercq, B.D.
Zheng, X.
Denkova, D.
Osley, E.J.
Vandendriessche, S.
Silhanek, A.V.
Volskiy, V.
Warburton, P.A.
Vandenbosch, G.A.E.
Ameloot, M.
Moshchalkov, V.V.
Verbiest, T.
Issue Date: 2012
Citation: OPTICS EXPRESS, 20 (1), p. 256-264
Abstract: While it has been demonstrated that, above its resolution limit, Second Harmonic Generation (SHG) microscopy can map chiral local field enhancements, below that limit, structural defects were found to play a major role. Here we show that, even below the resolution limit, the contributions from chiral local field enhancements to the SHG signal can dominate over those by structural defects. We report highly homogeneous SHG micrographs of star-shaped gold nanostructures, where the SHG circular dichroism effect is clearly visible from virtually every single nanostructure. Most likely, size and geometry determine the dominant contributions to the SHG signal in nanostructured systems.
URI: http://hdl.handle.net/1942/13354
DOI: 10.1364/OE.20.000256
ISI #: 000300082100042
ISSN: 1094-4087
Category: A1
Type: Journal Contribution
Validation: ecoom, 2013
Appears in Collections: Research publications

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