Patent ID: 8330073
Filing Date: 2012-12-11
Classification: B08B,B23K,G21F

Abstract:
1. An ablation method for ablating a surface layer ( 2 ) of a wall, said method comprising at least one scanning pass in which shots from at least one pulsed laser beam ( 6 or 6 a , 6 b , 6 c , 6 d ) with a beam quality M 2 of less than 20 are fired on to said layer, wherein the method includes a directional control of said shots by optical deflection by a stationary deflection head ( 5 ) with pulse durations of between 20 ns and 500 μs and an energy each pulse being between 0.1 mJ and 10 mJ in such a way that the simple or composite impact zones of said shots on said layer are separate or substantially contiguous with a minimized overlap that represents less than 10% of the area of each impact zone which has a largest dimension (d) between 10 μm and 500 μm.