Study on numerical analysis of the frequency characteristic of laser processing sound

The final goal of this research is to construct a laser processing system to manufacture stepped shapes or free-form surfaces using the information of detected laser processing sound. In order to achieve this goal, basic investigations concerning the analysis of the characteristics of laser processing sound are necessary. The purpose of this report is focused on the analysis of the frequency characteristics of a detected sound of a single pulse laser beam, and to clarify those of a continuous pulse laser beam by calculation.