Patent ID: 6821472
Filing Date: 2004-11-23
Classification: B23K,H05K

Abstract:
A method of controlling thermal loading of an electronic component material during ablation thereof, the method including:providing a first laser light beam at a certain power density and fluence and using the first laser light beam to remove a portion of a first side of the material, providing a second laser light beam at a certain power density and fluence and using the second laser light beam to remove a portion of a side of the material opposing the first side thereof substantially simultaneously as the portion of the first side is being removed, thereby controlling thermal loading of the material, permitting the first laser light beam to create a first heat affected zone in the workpiece and the second laser light beam to create a second heat affected zone in the workpiece, and permitting the heat affected zones to merge to define a heat assisted ablation zone, the method including ablating through the heat assisted ablation zone.