Gritsayenko Y. Scattering of surface and volume electromagnetic waves by rough crystalline surfaces

The work is devoted to the study of phenomena appeared at the scattering of the volume and surface waves by rough crystalline surfaces, namely, to the study of the enhancement of the surface plasmon polariton (SPP), which is defined as the ratio of the intensities of the p- and s-polarized waves scattered by the diffraction grating; study of this ratio as a dependency of gratings parameters; study of the dependence of the SPP scattering process on the surface roughness and the possibilities of its use for reconstruction of the surface shape by numerical treatment of the diffraction pattern; study of the possibilities to use scattering of volume waves to investigate the crystallization of amorphous films with the application to indium-tin oxide films. Detailed review of scientific literature was performed in the work. As a result of the review some open points were found. Particular attention was paid to the experimental features of measurement of the scattered light as by nanoobjects on the surface of semiconductors and metals, as by the metal surface itself. Due to these features the original experimental methods for measurement and analysis of the parameters of scattered light were used in the work. The intencity enhancement of scattered light due to excitation of surface plasmon polariton was measured and is equal to nearly 30000. The discrepancy between the theories of volume and surface plasmon-polaritons (SPPs) waves scattering was found. The qualitative explanation of these phenomena was proposed. It was shown that measurement of the SPP and volume waves scattering by a surface may be used for definition of the surface roughness, reconstruction of the surface shape and for study of the crystallization of amourphous films.It was shown experimentally that the method for trapping nanoparticles from liquids can be designed on the base of strong field localization near the edges of the diffraction gratings.