A model of an optical system for adjusting the axis of laser radiation on a photodetector module in a plane perpendicular to laser radiation has been developed. The operation of the optical system for controlling the position of the laser radiation axis on the photosensitive layer of the photodetector is simulated. Experimental studies are presented on correcting the position of the plates relative to the direction of the laser radiation axis and the value of stresses to change their refractive indices. The technique for determining the optimal parameters of the plates in the developed optical system for various tasks has been confirmed. The laser axis is automatically corrected and the displacement can be observed in real time. This allows data from other devices to be analyzed to identify the cause of the displacement and take the necessary action. Obtaining information on changes in displacement is a new principle not available in previously developed systems.