Creation of Stable Electromagnetic Generations in Limited Spatial Structures with Axial Symmetry

A method is offered for calculation of an optimal number of light ray runs within a rotating non-focal resonator, filled with optically transparent medium, in the disc interferometer circuit. The method provides the maximal difference of interfering rays path lengths and minimal optical losses taking into account the trajectory bending in the threedimensional velocity field. Equivalent path length is calculated for rays, passed through the rotating and stationary discs, for closed ray trajectories in the rotating medium.