Share Email Print
cover

Proceedings Paper

Temporal pulse manipulation and adaptive optimization in ultrafast laser processing of materials
Author(s): Razvan Stoian; Alexandre Mermillod-Blondin; Sebastian Winkler; Arkadi Rosenfeld; Ingolf Volker Hertel; Maria Spyridaki; Emmanuel Koudoumas; Costas Fotakis; Igor M. Burakov; Nadezhda M. Bulgakova
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Ultrafast lasers have become reliable tools for material processing on reduced scales, with extended options for process control and optimization. The additional possibility to shape the temporal envelope of ultrashort laser pulses by Fourier synthesis of spectral components enables completely new opportunities for optimal processing of materials. The concept of optimizing laser interactions is based on the possibility to regulate the energy delivery rate and to achieve control of laser-induced phenomena. An experimental demonstration of the technique showing the possibility to design excitation sequences tailored with respect to the material response will be described, laying the groundwork for adaptive optimization in materials structuring. We present recent results related to the implementation of self-learning loops based on temporal shaping of the ultrafast laser pulses to control laser-induced phenomena for practical applications. Besides the fundamental interest, it will be 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 will be given illuminating the possibility to optimize the kinetic properties of ions emitted from laser-irradiated semiconductor samples, uisng excitation sequences synchronized with the phase-transformation characteristic times, unfolding also interesting perspectives for "intelligent" processing of materials.

Paper Details

Date Published: 8 October 2004
PDF: 10 pages
Proc. SPIE 5662, Fifth International Symposium on Laser Precision Microfabrication, (8 October 2004); doi: 10.1117/12.596572
Show Author Affiliations
Razvan Stoian, Max-Born-Institut fuer Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Alexandre Mermillod-Blondin, Max-Born-Institut fuer Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Sebastian Winkler, Max-Born-Institut fuer Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Arkadi Rosenfeld, Max-Born-Institut fuer Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Ingolf Volker Hertel, Max-Born-Institut fuer Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Maria Spyridaki, Foundation for Research and Technology-Hellas (Greece)
Emmanuel Koudoumas, Foundation for Research and Technology-Hellas (Greece)
Costas Fotakis, Foundation for Research and Technology-Hellas (Greece)
Igor M. Burakov, Institute of Thermophysics (Russia)
Nadezhda M. Bulgakova, Institute of Thermophysics (Russia)


Published in SPIE Proceedings Vol. 5662:
Fifth International Symposium on Laser Precision Microfabrication
Isamu Miyamoto; Henry Helvajian; Kazuyoshi Itoh; Kojiro F. Kobayashi; Andreas Ostendorf; Koji Sugioka, Editor(s)

© SPIE. Terms of Use
Back to Top