Decision making two-wave mixing with rotating TiO2-supported Au-Pt nanoparticles

• Published in: Optics and laser technology 2019-11, Vol.119, p.105638, Article 105638
• Main Authors: Piña-Díaz, A.J., Torres-Torres, D., Trejo-Valdez, M., Torres-SanMiguel, C.R., Martínez-González, C.L., Torres-Torres, C.
• Format: Article
• Language: English
• Subjects: Birefringence; Decision making; Gold; Logic circuits; Nanoparticles; Nanosecond pulses; Nonlinear optics; Nonlinear response; Nonlinearity; Optical communication; Optical Kerr effect; Optical logic gates; Optical properties; Plasmonic nanoparticles; Platinum; Quantum phenomena; Rotation; Signal processing; Sol-gel processes; Titanium dioxide; Two-wave mixing; Wave diffraction
• ISSN: 0030-3992; 1879-2545
• DOI: 10.1016/j.optlastec.2019.105638

•Rotating effects and their influence on optical nonlinearities are presented.•A mechano-optical XOR logic function is proposed.•Nanosecond self-diffraction was analyzed by a two-wave mixing.•Au-Pt nanoparticles embedded in a rotating TiO2 thin solid film were studied. Mechano-optical rotating effects and their influence on the nonlinear optical properties exhibited by Au-Pt nanoparticles in a TiO2 thin solid film were analyzed. The plasmonic nanoparticles were prepared by a sol-gel processing route that involves TiO2 decoration. A vectorial two-wave mixing method with self-diffraction allowed us describing the third-order nonlinear optical response exhibited by a rotating sample during a polarization-resolved irradiation. A strong modification in the induced birefringence originated at 532 nm wavelength with nanosecond pulses was identified when the sample presents rotating motion. The absence of nonlinearity in the transmittance of a single-beam revealed that the optical Kerr effect in the nanostructures corresponds to the main mechanism responsible for the studied third-order nonlinear optical behavior. It was identified that the rotation of the sample can modulate self-diffraction signals in a two-wave mixing. An exclusive-or logic gate function was proposed by using a two-wave mixing configuration assisted by mechanical rotation of the sample. Potential applications of this technique can be contemplated for processing optical signals or quantum phenomena by combinational mechano-optical circuits.