Section method for real-time monitoring of the surface shape of the laser beam radiation spot

An approach to solving the problem of monitoring the surface shape of a radiation spot in real time is presented. An analysis of the use of the cross-sectional method to monitor the shape of the surface of a radiation spot in real time has been carried out. The possibility of using the aspect ratio to solve the problem was considered. Experimental studies of the sectional method and the aspect ratio method are also presented.