Abstract
Absorption enhancement of laser energy at roughened surface was discovered by our group years ago. Laser ablation threshold apparently decreases by intentional roughening of the surface. Another important condition of threshold reduction is found for transparent material surface, if the pulse laser beam is irradiated from the rear side through the transparent plate. Several examples of the shock pulse induced in water and in air by pulse laser ablation of ground glass, roughened PMMA plates and fiber has been observed in detail by high-speed photography. Simple preliminary experiments to study the physical mechanism of enhanced absorption of laser energy have also been planned and demonstrated.
| Original language | English |
|---|---|
| Pages (from-to) | 47-52 |
| Number of pages | 6 |
| Journal | Materials Science Forum |
| Volume | 566 |
| Publication status | Published - Jan 29 2008 |
| Event | 2nd International Symposium on Explosion, Shock Wave and Hypervelocity Phenomena, ESHP-2 - Kumamoto, Japan Duration: Mar 6 2007 → Mar 9 2007 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering