| 摘要 |
<p>A workpiece (W) provided with a surface layer (3) and an underlayer (2), layered one on top of the other, is irradiated from the surface-layer side towards the underlayer side with laser light (LZ) for which the optical absorption coefficient is higher in the underlayer (2) than in the surface layer (3), thereby removing just the surface layer (3) via ablation of the underlayer (2).</p> |
