Method optimizes laser etched, vis-a-vis the amount of aerosols

The invention relates to an optimized laser cutting method for cutting a part (1) from a material by means of a cutting system (10) comprising: a laser source (11) for producing a laser beam (111) having a certain power; and a cutting head (12) comprising an end nozzle (13) for the passage of a cutting laser beam (111), wherein the method is characterized in that it comprises: a step (S5) of determining a cutting power Pd such that Pd = Max(Popt; ?e) where Max is the mathematical operator of the maximum, Popt is an optimal power of the laser beam (111) of the cutting system (10), which is predetermined in accordance with the part (1) to be cut, and/or with cutting parameters and/or with system (10) parameters, in order to minimize the amount of aerosols (20) produced when the part (1) is being cut, ? is a leading coefficient representing the number of kW required for cutting the part per mm of the thickness of the part (1), and e is the thickness of the part in mm.