Abstract
UV irradiation of materials consisting of a polymer matrix that possesses precursors of noble metals followed by annealing results in creation of metal nanoparticles within the irradiated domains. Such photoinduced nanocomposites are promising for photonics applications due to the strong alteration of their optical properties compared to initial nonirradiated materials. We report our results on the synthesis and investigation of two kinds of these materials: (a) Photoinduced Au nanocomposites based on PMMA matrices, including bulk materials prepared by means of the polymerization technique; (b) photoinduced Ag nanocomposites with an organic–inorganic hybrid matrix based on TiO2 gels. The experimental data on evolution of absorption spectra of these materials due to laser irradiation at different wavelengths are presented. The linear and nonlinear refractive index changes in these materials owing to light-induced nanonstructuring are investigated.
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