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Proceedings Article

Ablation by short optical and x-ray laser pulses

[+] Author Affiliations
N. A. Inogamov, S. I. Anisimov, Yu. V. Petrov, V. A. Khokhlov

Landau Institute for Theoretical Physics (Russian Federation)

V. V. Zhakhovsky

Joint Institute for High Temperatures (Russian Federation) and Univ. of South Florida (USA)

A. Ya. Faenov, T. A. Pikuz

Joint Institute for High Temperatures (Russian Federation) and Japan Atomic Energy Agency (Japan)

V. E. Fortov, M. B. Agranat, S. I. Ashitkov, P. S. Komarov, I. Yu. Skobelev

Joint Institute for High Temperatures (Russian Federation)

Y. Kato

The Graduate School for the Creation of New Photonics Industries (Japan)

V. V. Shepelev

Institute for Computer Aided Design (Russian Federation)

Y. Fukuda, M. Tanaka, M. Kishimoto, M. Ishino, M. Nishikino, M. Kando, T. Kawachi

Japan Atomic Energy Agency (Japan)

M. Nagasono, K. Tono, T. Ishikawa

RIKEN (Japan)

H. Ohashi, M. Yabashi, T. Togashi

RIKEN (Japan) and Japan Synchrotron Radiation Research Institute (Japan)

Y. Senba

Japan Synchrotron Radiation Research Institute (Japan)

Proc. SPIE 7996, Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2010, 79960T (February 28, 2011); doi:10.1117/12.887429
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From Conference Volume 7996

  • Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2010
  • Vadim P. Veiko; Tigran A. Vartanyan
  • St. Petersburg, Russian Federation | July 05, 2010

abstract

The paper is devoted to experimental and theoretical studies of ablation of condensed matter by optical (OL), extreme ultraviolet (EUV) and X-ray lasers (XRL). Results obtained at two different XRL are compared. The first XRL is collision Ag-plasma laser with pulse duration τL = 7 ps and energy of quanta hv =89.3 eV, while the second one is EUV free electron laser (EUV-FEL) and has parameters τL = 0.3 ps and energy of quanta 20.2 eV. It is shown that ablation thresholds for these XRL at LiF dielectric are approximately the same. A theory is presented which explains slow growth of ablated mass with fluence in case of XRL as a result of transition from spallative ablation near threshold to evaporative ablation at high fluencies. It is found that the metal irradiated by short pulse of OL remains in elastic state even in high shear stresses. Material strength of aluminum at very high deformation rates V/V ~ 109 s-1 is defined.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

N. A. Inogamov ; S. I. Anisimov ; V. V. Zhakhovsky ; A. Ya. Faenov ; Yu. V. Petrov, et al.
"Ablation by short optical and x-ray laser pulses", Proc. SPIE 7996, Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2010, 79960T (February 28, 2011); doi:10.1117/12.887429; http://dx.doi.org/10.1117/12.887429


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