Hardware and software complex for automatic laser beam focusing and adjustment based on a circular-radial phototransist or array

Abstract

The application of laser techniques to technological processes and for large physical installations introduces initial problems concerning the automation of precise adjustment operations of the optomechanical elements and the on-line parameter (geometric and energy) control of the laser beam itself. The goal of the present work is the development of a silicon phototransistor array having a radial-circular arrangement of the photosensitive elements as well as a hardware and software complex on the basis of the said phototransistor array suitable for automatic adjustment and focusing of the laser beam.