Revisiting the interplay between ablation, collisional, and radiative processes during ns-laser ablation

Journal Article · Mon Oct 21 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4826505· OSTI ID:22217899

Autrique, D. ^[1]; Gornushkin, I. ^[2]; Alexiades, V. ^[3]; Chen, Z.; Bogaerts, A. ^[4]; Rethfeld, B. ^[1]

---

1. Department of Physics and OPTIMAS Research Center, TU Kaiserslautern, 67653 Kaiserslautern (Germany)
2. Federal Institute for Materials Research and Testing - BAM, 12489 Berlin (Germany)
3. Department of Mathematics, University of Tennessee, Knoxville, Tennessee 37996-1320 (United States)
4. Department of Chemistry, University of Antwerp, 2610 Wilrijk (Belgium)

A study of ns-laser ablation is presented, which focuses on the transient behavior of the physical processes that act in and above a copper sample. A dimensionless multiphase collisional radiative model describes the interplay between the ablation, collisional, and radiative mechanisms. Calculations are done for a 6 ns-Nd:YAG laser pulse operating at 532 nm and fluences up to 15 J/cm{sup 2}. Temporal intensity profiles as well as transmissivities are in good agreement with experimental results. It is found that volumetric ablation mechanisms and photo-processes both play an essential role in the onset of ns-laser induced breakdown.

• OSTI ID: 22217899
• Journal Information: Applied Physics Letters, Vol. 103, Issue 17; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABLATION
BREAKDOWN
COPPER
NEODYMIUM LASERS
PULSES
TRANSIENTS