Laser micro through-hole modification on the surface of narrow cavity parts without back wall damage based on axial shaping Bessel beam

Key Points

• Surface treatment using laser modification achieved precise through-holes without damaging back walls.
• Bessel beam technology used to enhance the dimensional precision of narrow cavity parts effectively.
• This analysis reveals effective methods for laser modification, focusing on stability during the process.
• Supports potential industrial applications, encouraging further investigation into advanced laser techniques.