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Proceedings Article

Dynamics of femtosecond-laser-induced ablation from solid surfaces

[+] Author Affiliations
Klaus Sokolowski-Tinten, Joerg Bialkowski, Martin Boing, Harald Schueler, Dietrich von der Linde

Univ.-Gesamthochschule Essen (Germany)

Andrea Cavalleri

Univ.-Gesamthochschule Essen and Univ. degli Studi di Pavia (USA)

Proc. SPIE 3343, High-Power Laser Ablation, 46 (September 14, 1998); doi:10.1117/12.321593
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From Conference Volume 3343

  • High-Power Laser Ablation
  • Claude R. Phipps
  • Santa Fe, NM | April 26, 1998

abstract

Femtosecond laser induced ablation from solid surfaces has been investigated by means of time resolved microscopy. On transparent materials ablation is initiated by dielectric breakdown and formation of a dense and hot surface plasma. Measurements of the plasma threshold yield values of a few times 1013 W/cm2 with little variation among different materials. This indicates that microscopic surface properties are responsible for surface breakdown. On absorbing semiconductors and metals near-threshold ablation is brought about by hydrodynamic expansion of the laser generated hot and pressurized matter. Upon expansion into vacuum initially metallic materials transform into a transparent state with a high refractive index. The observed behavior is related to general properties of matter in the liquid-gas coexistence regime.

© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Klaus Sokolowski-Tinten ; Joerg Bialkowski ; Andrea Cavalleri ; Martin Boing ; Harald Schueler, et al.
"Dynamics of femtosecond-laser-induced ablation from solid surfaces", Proc. SPIE 3343, High-Power Laser Ablation, 46 (September 14, 1998); doi:10.1117/12.321593; http://dx.doi.org/10.1117/12.321593


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