A.G. Sveshnikov

Analysis of Spatial Resonances in the Field of Evanescent Waves by the Discrete Source Method

Scattering properties of particles placed on a metal film deposited on a glass prism are studied in detail using a computer implementation of the discrete source method. The presence of scattering cross-section resonances in the region of angles of incidence of a plane wave has been established. The possibility of controlling the radiation directionality in the resonance range is demonstrated. Conditions that permit one to increase the resonance intensity by an order of magnitude have been found.

Employing “Fictitious” particles for analysis of scattering properties of undistinguished substrate defects

Modification of the Discrete Sources Method based on employing of “fictitious” particle is suggested and performed. This approach allows one to perform an effective numerical analysis of the scattering properties of nanodimensional substrate defects, such as shallow pits and shallow bumps. Numerical results that demonstrate the capabilities of the implemented computer module are presented.

Analysis of extraordinary optical transmission trough a conducting film by the discrete sources method

The discrete sources method is used to analyze the transformation of evanescent waves by a nanometric structure. The extraordinary transmission of light through a nanohole in a conducting film is shown to arise in other inhomogeneities. The mechanism of this phenomenon is established using simulation results.

Investigation of the Resonance Properties of Nanodimensional Rods by the Method of Discrete Sources

Based on the method of discrete sources, a mathematical model for the analysis of the spectral characteristics of the scattering of nonradiative waves by nanodimensional rods arranged on the surface of a glass prism was constructed. It was shown that the spectral characteristics significantly depend on both the elongation of the rods and their orientation.

A mathematical model of a layered structure with a nanodimensional hole

A mathematical model for the problem of scattering of polarized light emission by a nanodimensional hole in a metal film on a glass substrate is developed on the basis of the discrete sources method. The effect of extremal energy leakage through the hole is discovered in the evanescent-wave region.