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Optical Third Harmonic Generation Using Nickel Nanostructure-Covered Microcube Structures

The Institute of Optics, University of Rochester, Hutchison Road 275, Rochester, NY 14627, USA
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Materials 2018, 11(4), 501; https://doi.org/10.3390/ma11040501
Received: 10 February 2018 / Revised: 22 March 2018 / Accepted: 23 March 2018 / Published: 27 March 2018
(This article belongs to the Special Issue Plasmonics and its Applications)
We investigated the optical third harmonic generation (THG) signal from nanostructure-covered microcubes on Ni. We found that the hierarchical structures greatly change the third-order optical nonlinearity of the metallic surface. While the symmetry and lightning rod (LR) effects on microstructures did not significantly influence the THG, the localized surface plasmon (LSP) effect on the nanostructures enhanced it. By removing the nanostructures on the hierarchical structures, THG intensity could be strongly suppressed. In the present paper, we also discuss the mechanism that enhances THG in nano/micro structures. View Full-Text
Keywords: Ni; THG; nonlinearity; plasmon; lightning rod Ni; THG; nonlinearity; plasmon; lightning rod
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Ogata, Y.; Vorobyev, A.; Guo, C. Optical Third Harmonic Generation Using Nickel Nanostructure-Covered Microcube Structures. Materials 2018, 11, 501.

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