The study of the laser beam is based on optical models, therefore optical models are suited as a tool for study, implement
and evaluate the characteristics of an unfocused laser beam. The analysis of the optical models shows the characteristics
of pulse and continuous laser beam and the influence over the quality of the industrial process.
A wide range of measurements have been used during time in order to define the characteristics of laser beam, therefore
it is useful to analyze and re-establish the role of each type of measurement. The scope of these measurements is to
increase the precision and reproducibility with which beams propagate, interact and can be focused on a target (part) in
an industrial process.