SYSTEM AND METHOD OF LASER DRILLING USING A CONTINUOUSLY OPTIMIZED DEPTH OF FOCUS

摘要

A method of adjusting depth of focus in a laser milling system includes generating a laser beam having a focal plane, positioning a workpiece in the focal plane with a surface of the workpiece exposed to the laser beam at a point intersecting the focal plane, and adjusting a position of the workpiece or the focal plane to maintain a constant ablation rate on the exposed surface of the workpiece throughout the drilling process.