Effect of distance-dependent plasmonic coupling between gold nanorods and silicon substrate on second harmonic generation

2016 ◽  
Author(s):  
Cindy J. Valencia-Caicedo ◽  
Marco A. García-Zárate ◽  
Elena Chaikina ◽  
Anatoly V. Khomenko
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Silicon Substrate ◽  
Second Harmonic ◽  
Plasmonic Coupling

Second Harmonic Generation-based Nonlinear Plasmonic RI-Sensing in Solution: Pivotal Role of Particle Size

2021 ◽  
Author(s):  
Mrigank Verma ◽  
Manabendra Chandra
Keyword(s):  
Particle Size ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Second Harmonic ◽  
Solution Phase ◽  
Pivotal Role

Here, we demonstrate the utility of the second harmonic generation (SHG) for refractometric sensing in the solution phase. We employ an aqueous colloid of gold nanorods as our sensors and,...

scholarly journals Plasmon Enhanced Second Harmonic Generation from ZnO Nanofilms on Vertical Au Nanorod Arrays

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2597
Author(s):  
Qiang Ma ◽  
Chengda Pan ◽  
Yingxian Xue ◽  
Zhiyun Fang ◽  
Shiyu Zhang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Second Harmonic ◽  
Nanorod Array ◽  
Gold Nanorod ◽  
Nanorod Arrays ◽  
Plasmonic Enhancement ◽  
Vertically Aligned

Vertically aligned gold nanorod arrays have attracted much attention for their fascinating optical properties. Different from longitudinal surface plasmon wavelength (LSPW) and edge-to-edge spacing of gold nanorods, the role of gold nanorod diameter in plasmonic enhancement ability of vertical gold nanorod arrays has rarely been explored. In this work, we selected gold nanorods with similar LSPW but two different diameters (22 and 41 nm), the optical properties of which are dominated by absorption and scattering cross sections, respectively. The vertically aligned arrays of these gold nanorods formed by evaporation self-assembly are coupled with nonlinear ZnO nanocrystal films spin-coated on their surfaces. It was found that the gold nanorod array with a larger diameter can enhance the second harmonic generation (SHG) of ZnO nanofilm by a factor of 27.0, while it is about 7.3 for the smaller gold nanorod array. Theoretical simulations indicate that such stronger enhancement of the larger vertical gold nanorod array compared with the smaller one is due to its stronger scattering ability and greater extent of near-field enhancement at SHG fundamental wavelength. Our work shows that the diameter of gold nanorods is also an important factor to be considered in realizing strong plasmon enhancement of vertically aligned gold nanorod arrays.

scholarly journals Role of surface plasmon in second harmonic generation from gold nanorods

2007 ◽  
Vol 90 (18) ◽  
pp. 181105 ◽  
Author(s):  
C. Hubert ◽  
L. Billot ◽  
P.-M. Adam ◽  
R. Bachelot ◽  
P. Royer ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Surface Plasmon ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Second Harmonic

scholarly journals Plasmon-Mediated Chiroptical Second Harmonic Generation from Seemingly Achiral Gold Nanorods

2021 ◽  
Author(s):  
Zehua Li ◽  
Lei Kang ◽  
Robert W. Lord ◽  
Kyoungweon Park ◽  
Andrew Gillman ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Second Harmonic

Test of directional photoionisation models of second harmonic generation in optical fibres

1992 ◽  
Vol 139 (2) ◽  
pp. 133 ◽  
Author(s):  
N.M. Lawandy ◽  
T.J. Driscoll ◽  
C.L. Adler ◽  
N.M. Lawandy
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Optical Fibres
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