The role of excited species in UV-laser materials ablation: Part I: Photophysical ablation of organic polymers
Abstract
UV-laser ablation is described in terms of a two-level system in which the excitation energy is dissipated via stimulated emission, thermal relaxation, and activated desorption of excited species. For thermal relaxation times tT>10-9 s and ΔE* ≪ ΔE (activation energies for excited-state and ground-state species) the model predicts high ablation rates at moderate surface temperatures, typically below 2000° C.
- Publication:
-
Applied Physics A: Materials Science & Processing
- Pub Date:
- October 1993
- DOI:
- 10.1007/BF00332291
- Bibcode:
- 1993ApPhA..57..367L
- Keywords:
-
- PACS 82.65 - 82.50 - 42.10;
- 82.65;
- 82.50;
- 42.10