Abstract
Ablation characteristics of ultrashort laser pulses were investigated for pulse durations in the range of 130 fs-10 ps. Tissue samples used in the study were dental hard tissue (dentin) and water. We observed differences in ablation crater morphology for craters generated with pulse durations in the 130 fs-1 ps and the 5 ps-10 ps range. For the water experiment, the surface ablation and subsequent propagation of stress waves were monitored using Mach-Zehnder interferometry. For 130 fs-1 ps, energy is deposited on the surface while for longer pulses the beam penetrates into the sample. Both studies indicate that a transition occurs between 1 and 5 ps.
| Original language | English |
|---|---|
| Pages (from-to) | 332-338 |
| Number of pages | 7 |
| Journal | Journal of biomedical optics |
| Volume | 6 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2001 Jul |
| Externally published | Yes |
Keywords
- Ablation
- Biological tissues
- Pulse duration
- Ultrashort laser pulse
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Atomic and Molecular Physics, and Optics
- Biomedical Engineering