The role of chiral local field enhancements below the resolution limit of Second Harmonic Generation microscopy | Zendy

Ventsislav K. Valev | Zendy; B. De Clercq | Zendy; Xuezhi Zheng | Zendy; Denitza Denkova | Zendy; E. J. Osley | Zendy; Stefaan Vandendriessche | Zendy; A. V. Silhanek | Zendy; Vladimir Volskiy | Zendy; P. A. Warburton | Zendy; G.A.E. Vandenbosch | Zendy; Marcel Ameloot | Zendy; V. V. Moshchalkov | Zendy; Thierry Verbiest | Zendy

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The role of chiral local field enhancements below the resolution limit of Second Harmonic Generation microscopy

Author(s) -

Ventsislav K. Valev,

B. De Clercq,

Xuezhi Zheng,

Denitza Denkova,

E. J. Osley,

Stefaan Vandendriessche,

A. V. Silhanek,

Vladimir Volskiy,

P. A. Warburton,

G.A.E. Vandenbosch,

Marcel Ameloot,

V. V. Moshchalkov,

Thierry Verbiest

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.000256

Subject(s) - second harmonic generation , optics , microscopy , resolution (logic) , materials science , surface second harmonic generation , second harmonic imaging microscopy , nanostructure , near field scanning optical microscope , local field , optical microscope , physics , nanotechnology , condensed matter physics , scanning electron microscope , laser , artificial intelligence , computer science

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.

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