Time-resolved spatial distribution of plasma in the ablation of a Ba₀.₆Sr₀.₄TiO₃ target by 25 ns KrF ultraviolet laser

Journal Article · Tue Oct 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4897223· OSTI ID:22305739

Lagrange, J. F.; Wolfman, J.; Motret, O. ^[1]; Hermann, J. ^[2]

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1. Groupe de Recherche en Matériaux, microélectronique, Acoustique et Nanotechnologies (GREMAN) - UMR 7347 CNRS-CEA, Université François Rabelais de Tours, Faculté des Sciences and Techniques, Parc Grandmont - bât. E – 37200 Tours (France)
2. Laboratoire Lasers, Plasmas et Procédés Photoniques (LP3), UMR 6182 CNRS, Aix-Marseille Université, 163 Avenue de Luminy, C. 917 - 13288 Marseille (France)

We performed radially and longitudinally time-resolved plasma analysis during pulsed laser deposition of Ba₀.₆Sr₀.₄TiO₃ thin films. The plasma is shown to be optically thick and strongly non-uniform during the early expansion phase and the resonance line Ba II (455.4 nm) is strongly self-reversed during this time. Plasma temperature and electron density were obtained by comparing experimental emission spectra with the spectral radiance computed for a non-uniform plasma in local thermal equilibrium.

• OSTI ID: 22305739
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABLATION
BARIUM COMPOUNDS
ELECTRON DENSITY
ELECTRON TEMPERATURE
EMISSION SPECTRA
ENERGY BEAM DEPOSITION
EXPANSION
ION TEMPERATURE
LASER RADIATION
PLASMA
PULSED IRRADIATION
RESONANCE
SPATIAL DISTRIBUTION
STRONTIUM COMPOUNDS
THERMAL EQUILIBRIUM
THIN FILMS
TIME RESOLUTION
TITANATES
ULTRAVIOLET RADIATION