Three-dimensional Gaussian beam with circular cross-section scattered from a gyrotropic slab

The problem of the scattering of 3-D Gaussian beam incident at an arbitrary angle onto a gyrotropic slab has been formulated and solved. The new formulas for the scattered 3-D Gaussian beam fields in the form of the single integrals have been derived. They allow to reduce the time spent upon the numerical calculations of the scattered beam fields.