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Proceedings Paper

Twisted light by a Kerr-like TiO2 thin film with Au-Pt nanoparticles
Author(s): H. Martines-Arano; A. J. Piña-Díaz; C. R. Torres-SanMiguel; M. Trejo-Valdez; C. Torres-Torres
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Paper Abstract

Third-order nonlinear optical effects exhibited by Gold-Platinum nanoparticles in a Titanium Dioxide thin solid film were induced by a two-wave mixing configuration with digitally-modulated irradiance profiles. The nanomaterials were prepared by a sol-gel method, and a spinning coating technique was employed for the preparation of the samples in thin film form. We used a Nd:YAG laser system at 532 nm wavelength and 4 nanosecond for the exploration of the thirdorder optical nonlinearities. The characterization of the morphology and optical transmittance was carried out by transmission electronic microscopy and UV-vis spectroscopy studies; respectively. A round continuously variable nonlinear refractive index was proposed to generate twisted light by nanosecond pulses in the sample. The system was designed with a randomly distributed density of the nanoparticles. This technique can be considered an alternative for performing ultrafast all-optical instrumentation functions.

Paper Details

Date Published: 6 December 2019
PDF: 4 pages
Proc. SPIE 11371, International Workshop on Thin Films for Electronics, Electro-Optics, Energy, and Sensors 2019, 113710E (6 December 2019); doi: 10.1117/12.2535817
Show Author Affiliations
H. Martines-Arano, Instituto Politécnico Nacional (Mexico)
A. J. Piña-Díaz, Instituto Politécnico Nacional (Mexico)
C. R. Torres-SanMiguel, Instituto Politécnico Nacional (Mexico)
M. Trejo-Valdez, Instituto Politécnico Nacional (Mexico)
C. Torres-Torres, Instituto Politécnico Nacional (Mexico)

Published in SPIE Proceedings Vol. 11371:
International Workshop on Thin Films for Electronics, Electro-Optics, Energy, and Sensors 2019
Partha Banerjee; Karl Gudmundsson; Akhlesh Lakhtakia; Guru Subramanyam, Editor(s)

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