No abstract

An algorithm for presentation a three-dimensional graphical dependency in the PascalABC.NET environment using the Bitmap class, by means of "contour surfaces" in the RAD development of custom window applications (Windows Form Application) has been developed. A comparative analysis of the graphical interpretation of the calculation results in the computer mathematics systems MATLAB, MathCAD and PascalABC.NET has been carried out.

Calculating nonlinear optical phenomena in a barium-strontium niobate photorefractive crystal we constructed a mathematical model of the two-dimensional linearly polarized Gaussian light beams propagation taking into account all components of the linear electrooptic tensor. We investigated the dependence of the light beam intensity on the polarization azimuth at the entrance of the crystal and on the direction of the external electric field applied to a photorefractive crystal. We determined the conditions under which the focusing of two-dimensional Gaussian light beams at the exit of the crystal is maximal.