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25 May 2022 Nonlinear optical properties of core-shell silver nanoparticles with sodium citrate and ligand claddings
Arturs Bundulis, Jelena Mikelsone
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Proceedings Volume 12143, Nonlinear Optics and its Applications 2022; 121430H (2022) https://doi.org/10.1117/12.2621115
Event: SPIE Photonics Europe, 2022, Strasbourg, France
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Abstract
In this paper, we present a study on nonlinear optical effects in two types of core-shell nanoparticles with different claddings - thiol-termination ligand and sodium citrate/PVP claddings. Nanoparticles were dissolved in Dichloromethane and studied using the Z-scan method. As laser sources we used a tunable laser with 150 fs pulse width and 500 kHz pulse repetition rate. To study what processes lead to refractive index changes we used the polarization-resolved Z-scan method. A strong thermal response was observed for spherical nanoparticles. Both nanoparticles had similar spectral dispersion for Two-photon absorption, but spherical had a much stronger Kerr response.
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Arturs Bundulis and Jelena Mikelsone "Nonlinear optical properties of core-shell silver nanoparticles with sodium citrate and ligand claddings", Proc. SPIE 12143, Nonlinear Optics and its Applications 2022, 121430H (25 May 2022); https://doi.org/10.1117/12.2621115
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KEYWORDS
Nanoparticles
Kerr effect
Silver
Nonlinear optics
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