Zero-cut processing method for high-hardness materials and manufacturing method for high-hardness material structures

摘要

To perform highly accurately fine processing of a high hardness material such as a hard metal by using femtosecond laser.SOLUTION: A zero cut processing method of a high hardness material includes a cutting step (S102) in which, when focusing a femtosecond laser beam by a lens, and irradiating a processing surface of the high hardness material with the laser beam, processing is performed by setting a focal position of the laser beam at a cutting position determined by being brought close toward a processing surface as much as a prescribed cutting depth from a position separated from the processing surface, which is a position where processing of the processing surface cannot be performed if the distance is farther than that, and a zero cut step (S103) for performing zero cut without changing the focal position of the laser beam from the cutting position.SELECTED DRAWING: Figure 2