Article (Scientific journals)
The role of chiral local field enhancements below the resolution limit of Second Harmonic Generation microscopy
Valev, V.; Clercq, B.; Zheng, X. et al.
2011In Optics Express, 20 (1), p. 256
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Keywords :
plasmonics
Abstract :
[en] 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.
Disciplines :
Physics
Author, co-author :
Valev, V.
Clercq, B.
Zheng, X.
Denkova, D.
Osley, E. J.
Vandendriessche, S.
Silhanek, Alejandro  ;  Université de Liège - ULiège > Département de physique > Physique de la matière condensée
Volskiy, V.
Warburton, P. A.
Vandenbosch, G. A.
Ameloot, M.
Moshchalkov, V. A.
Verbiest, T.
More authors (3 more) Less
Language :
English
Title :
The role of chiral local field enhancements below the resolution limit of Second Harmonic Generation microscopy
Publication date :
2011
Journal title :
Optics Express
eISSN :
1094-4087
Publisher :
Optical Society of America, Washington, United States - District of Columbia
Volume :
20
Issue :
1
Pages :
256
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 22 December 2011

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