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Proceedings Paper

Adaptive optimization in ultrafast laser material processing (Plenary Paper)
Author(s): Razvan Stoian; Alexandre Mermillod-Blondin; Arkadi Rosenfeld; Ingolf V. Hertel; Maria Spyridaki; Emmanuel Koudoumas; Costas Fotakis; Igor M. Burakov; Nadezhda M. Bulgakova
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Paper Abstract

Ultrafast lasers promise to become attractive and reliable tools for material processing on micro- and nanoscale. The additional possibility to temporally tailor ultrashort laser pulses by Fourier synthesis of spectral components enables extended opportunities for optimal processing of materials. An experimental demonstration of the technique showing the possibility to design particular excitation sequences tailored with respect to the individual material response will be described, laying the groundwork for adaptive optimization in materials structuring. We report recent results related to the implementation of self-learning, adaptive loops based on temporal shaping of the ultrafast laser pulses to control laser-induced phenomena for practical applications. Besides the fundamental interest, it is shown that under particular excitation conditions involving modulated excitation, the energy flow can be controlled and the material response can be guided to improve processing results. Examples are given illuminating the possibility to control and manipulate the kinetic properties of ions emitted from laser irradiated semiconductor samples using excitation sequences synchronized with the phase transformation characteristic times.

Paper Details

Date Published: 20 September 2004
PDF: 11 pages
Proc. SPIE 5448, High-Power Laser Ablation V, (20 September 2004); doi: 10.1117/12.547267
Show Author Affiliations
Razvan Stoian, Max-Born-Institut fur Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Alexandre Mermillod-Blondin, Max-Born-Institut fur Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Arkadi Rosenfeld, Max-Born-Institut fur Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Ingolf V. Hertel, Max-Born-Institut fur Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Maria Spyridaki, Institute of Electronic Structure and Laser (Greece)
Emmanuel Koudoumas, Institute of Electronic Structure and Laser (Greece)
Costas Fotakis, Institute of Electronic Structure and Laser (Greece)
Igor M. Burakov, Institute of Thermophysics (Russia)
Nadezhda M. Bulgakova, Institute of Thermophysics (Russia)


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

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