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Title: The role of chiral local field enhancements below the resolution limit of Second Harmonic Generation microscopy
Authors: V. K. Valev, Ventsislav ×
Clercq, B. D
Zheng, Xuezhi
Denkova, Denitza
Osley, E. J
Vandendriessche, Stefaan
Silhanek, A. V
Volskiy, Vladimir
Warburton, P. A
Vandenbosch, G. A. E
Ameloot, M
Moshchalkov, Victor
Verbiest, Thierry #
Issue Date: 2-Jan-2012
Publisher: Optical Society of America
Series Title: Optics Express vol:20 issue:1 pages: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. (C) 2011 Optical Society of America
ISSN: 1094-4087
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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