6 b respectively so that the intensity of the laser beam 3 can be controlled with such a configuration the machining quality or the machined shape can be improved fig4 is a configuration diagram of a laser machine showing a modification of the present invention in fig4 parts the same as or having the same functions as those in fig1 are denoted by the same reference numerals correspondingly and their description will be omitted a pulse shaper aom here 10 is disposed at the rear of the aom 4 on the optical path of the laser beam 3 and a laser stopper 11 is disposed at the rear of the aom 10 the aom 10 is connected to the arbitration unit 5 the laser positioning unit 6 a is disposed on the deflection side of the aom 10 while the laser positioning unit 6 b is disposed on the deflection side of the aom 4 fig5 is a time chart of the operation in this embodiment incidentally when there is no special instruction the aoms 4 and 10 are off for example assume that the positioning of the laser positioning unit 6 a is terminated prior to the positioning of the laser positioning unit 6 b time.