THE ROLE OF EXCITED SPECIES IN UV-LASER MATERIALS ABLATION .1. PHOTOPHYSICAL ABLATION OF ORGANIC POLYMERS

Authors
LUKYANCHUK B BITYURIN N ANISIMOV S BAUERLE D
Citation
B. Lukyanchuk et al., THE ROLE OF EXCITED SPECIES IN UV-LASER MATERIALS ABLATION .1. PHOTOPHYSICAL ABLATION OF ORGANIC POLYMERS, Applied physics. A, Solids and surfaces, 57(4), 1993, pp. 367-374
Citations number
17
Categorie Soggetti
Physics, Applied
Journal title
Applied physics. A, Solids and surfaces → ACNP
ISSN journal
07217250
Volume
57
Issue
4
Year of publication
1993
Pages
367 - 374
Database
ISI
SICI code
0721-7250(1993)57:4<367:TROESI>2.0.ZU;2-D
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 r elaxation times t(T) > 10)(-9) s and DELTAE << DELTAE (activation ene rgies for excited-state and ground-state species) the model predicts h igh ablation rates at moderate surface temperatures, typically below 2 000-degrees-C.