Method for controlling configuration of laser induced breakdown and ablation

(57) A summary and subject The method of localizing and cutting the structure of non-living thing material with high precision using a pulsed-laser-radiation line is offered. Solution means In the relation between the fluence destructive threshold value Fth and laser-beams pulse width T the feature of the material concerned, noting that a rapid and clear change of the slope is looked at by the fixed pulse width value -- the pulse width of each pulse is the above -- it is equal to a fixed laser-pulse-width value, or is the method of consisting of a process which generates laser beams which serve as pulse width not more than it and with which the above-mentioned material is irradiated.