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Proceedings Paper

Ionization mechanisms in dielectrics irradiated by femtosecond laser pulses (Poster Award Paper)
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Paper Abstract

In order to investigate the ultrafast dynamics of free carriers generated in bulk dielectrics by intense femtosecond laser pulses we have designed a setup for ultrafast time-resolved imaging Mach-Zehnder interferometry. The application of the 2D-Fourier-transform technique allows us to accurately reconstruct the actual laser-induced phase shifts and transmission changes for the probe pulses, which provide the properties of free carriers. Interferometric measurements in high-purity fused silica clearly demonstrate that the dominant ionization mechanism for intensities below 10 TW/cm2 is multiphoton ionization.

Paper Details

Date Published: 20 September 2004
PDF: 8 pages
Proc. SPIE 5448, High-Power Laser Ablation V, (20 September 2004); doi: 10.1117/12.547145
Show Author Affiliations
Vasily V. Temnov, Univ. Duisburg-Essen (Germany)
Klaus Sokolowski-Tinten, Univ. Duisburg-Essen (Germany)
Ping Zhou, Univ. Duisburg-Essen (Germany)
Barbel Rethfeld, Univ. Duisburg-Essen (Germany)
Vitaly E. Gruzdev, Univ. Duisburg-Essen (Germany)
Abd-Allah El-Khamawy, Univ. Duisburg-Essen (Germany)
Dietrich von der Linde, Univ. Duisburg-Essen (Germany)

Published in SPIE Proceedings Vol. 5448:
High-Power Laser Ablation V
Claude R. Phipps, Editor(s)

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