Abstract
Copyright © 2019 SPIE. 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.
Original language | American English |
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DOIs | |
State | Published - 1 Jan 2019 |
Event | Proceedings of SPIE - The International Society for Optical Engineering - Duration: 1 Jan 2019 → … |
Conference
Conference | Proceedings of SPIE - The International Society for Optical Engineering |
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Period | 1/01/19 → … |