Hyper-Rayleigh light scattering in the third harmonic generation in silver island films

Hyper-Rayleigh scattering in the third harmonic generation (incoherent optical third harmonic) was experimentally observed in spatially inhomogeneous, quasi-two-dimensional structures formed by silver island films. A comprehensive analysis of the linear and nonlinear light scattering in combination with the results of atomic-force microscopy revealed the fractal nature of the island films studied in the experiment.