Crystallization effect on non-linear optical response of silicate glass and glass-ceramics containing gold nanoparticles

Gold Nanoparticles: Assembly, Supramolecular Chemistry, Quantum-Size-Related Properties, and Applications toward Biology, Catalysis, and Nanotechnology

“…The temporal absorption change at the SPB showed that the fast component of the relaxation process was hardly changed with crystallization, while the relaxation time of the tail component decreased with an increase in crystallite size. 647 The relaxation time was also found to increase with a decrease of the AuNP radius, and the tail of the decay curve due to the slow relaxation component increased with an increase of the AuNP size. 648 Dielectric periodic structures in which some frequencies of light cannot penetrate because photon modes at these frequencies do not exist in the structure were called photonic crystals.…”

“…Crystallization effects were found to influence the NLO response of transparent glass−ceramics with AuNP nuclei. The temporal absorption change at the SPB showed that the fast component of the relaxation process was hardly changed with crystallization, while the relaxation time of the tail component decreased with an increase in crystallite size . The relaxation time was also found to increase with a decrease of the AuNP radius, and the tail of the decay curve due to the slow relaxation component increased with an increase of the AuNP size .…”

“…The homogeneous incorporation of silica-coated AuNPs into a transparent silica gel without any aggregation of particles has been reported ,,,,,− and highly stable AuNPs have been prepared inside HY zeolite supercages 33 SEM images of plasmonic waveguide structures fabricated by assembling the Au@SiO 2 core−shell AuNP against templates (see insets) patterned in thin films of photoresist.…”

Effect of illumination on linear and nonlinear optical parameters of Ga5Se95 thin films

“…Gallium-selenium glasses have many potential applications in various optical systems in the visible region, information processing, communications [21,22], femtosecond laser pulse optical rectification, in electro-optic sampling [23], and far-infrared conversion applications of GaSe crystal [24]. A nonlinear optical effect is shown to occur in gallium selenide at photon energies of the order of 1.5 eV [25].…”

Contribution of the Two-Photon Absorption to the Third Order Nonlinearity of Au Nanoparticles Embedded in TiO2 Films and in Ethanol Suspension

“…Certainly, there must be a crystallite size dependence on the nonlinear optical properties. As an example, it has been probed that the relaxation of the nonlinear optical response of Au Nps is dependent on the crystallinity when thermal conductivity contributes to the mechanism of nonlinearity; and furthermore, stability of Au Nps is different for an amorphous matrix and a crystalline matrix . It has been observed that linear and nonlinear optical responses increase with the enhancement of TiO 2 crystallinity in some nanohybrids .…”