Second harmonic generation on self-assembled tilted gold nanowires

2015 ◽  
Vol 178 ◽  
pp. 357-362 ◽  
Author(s):  
Alessandro Belardini ◽  
Marco Centini ◽  
Grigore Leahu ◽  
Eugenio Fazio ◽  
Concita Sibilia ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Incidence Angle ◽  
Normal Incidence ◽  
Gold Nanowires ◽  
Powerful Method ◽  
Pulsed Light ◽  
Self Assembled

Here we present measurements on a metasurface composed by tilted gold nanowires. The metasurface can induce an optical chiral response of the whole sample when the light impinges on the sample out of the normal incidence angle. In order to investigate the symmetry breaking induced by the geometry, we measured the second harmonic generation (SHG) signal generated by circular polarized pulsed light. This technique has demonstrated to be a powerful method in order to investigate the chiral morphology of nanostructures.

Enhanced Second Harmonic Generation from an Organic Self-Assembled Eutectic Binary Mixture: A Case Study with 3-Nitrobenzoic and 3,5-Dinitrobenzoic Acids

2015 ◽  
Vol 15 (2) ◽  
pp. 946-960 ◽  
Author(s):  
Florent Simon ◽  
Simon Clevers ◽  
Gabin Gbabode ◽  
Nicolas Couvrat ◽  
Valérie Agasse-Peulon ◽  
...  
Keyword(s):  
Binary Mixture ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Self Assembled

scholarly journals Second Harmonic Generation from Phase-Engineered Metasurfaces of Nanoprisms

Micromachines ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 848 ◽  
Author(s):  
Kanta Mochizuki ◽  
Mako Sugiura ◽  
Hirofumi Yogo ◽  
Stefan Lundgaard ◽  
Jingwen Hu ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Field Enhancement ◽  
Normal Incidence ◽  
Electrical Field ◽  
Fundamental Wavelength ◽  
Reflectivity Spectra ◽  
Lift Off ◽  
Second Order Nonlinearity

Metasurfaces of gold (Au) nanoparticles on a SiO2-Si substrate were fabricated for the enhancement of second harmonic generation (SHG) using electron beam lithography and lift-off. Triangular Au nanoprisms which are non-centro-symmetric and support second-order nonlinearity were examined for SHG. The thickness of the SiO2 spacer is shown to be an effective parameter to tune for maximising SHG. Electrical field enhancement at the fundamental wavelength was shown to define the SHG intensity. Numerical modeling of light enhancement was verified by experimental measurements of SHG and reflectivity spectra at the normal incidence. At the plasmonic resonance, SHG is enhanced up to ∼3.5 × 103 times for the optimised conditions.

Second Harmonic Generation Investigation of Symmetry Breaking and Flexoelectricity Induced by Nanoindentations in SrTiO 3

2019 ◽  
Vol 29 (36) ◽  
pp. 1901266 ◽  
Author(s):  
Gitanjali Kolhatkar ◽  
Mischa Nicklaus ◽  
Azza Hadj Youssef ◽  
Cristian Cojocaru ◽  
Maxime Rivard ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic

Probing nonlinear optical coefficients in self-assembled peptide nanotubes

2017 ◽  
Vol 19 (4) ◽  
pp. 3084-3093 ◽  
Author(s):  
Soma Khanra ◽  
Kartik Ghosh ◽  
Fabio F. Ferreira ◽  
Wendel A. Alves ◽  
Francesco Punzo ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Peptide Nanotubes ◽  
Self Assembled ◽  
Individual Self

Second harmonic generation polarimetry from individual self-assembled peptide nanotubes is used to obtain the ratio of the nonlinear coefficients.

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