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Optimization of the Energy Deposition in Glasses with Temporally-Shaped Femtosecond Laser Pulses

Authors
Journal
Physics Procedia
1875-3892
Publisher
Elsevier
Publication Date
Volume
12
Identifiers
DOI: 10.1016/j.phpro.2011.03.108
Keywords
  • Ultrafast Laser
  • Waveguide Writing
  • Pump-Probe
  • Temporal Shaping

Abstract

Abstract Bulk machining of glasses with femtosecond laser pulses enables the fabrication of embedded optical functions. Due to the nonlinear character of the laser-matter interaction, structural modifications can occur within the focal region. To reach a full control of the process, ways of controlling the deposition of the laser energy inside the material have to be unveiled. From static and time-resolved pictures of bulk-excitation of a-SiO2 and borosilicate glass, we show that particular laser temporal shapes such as picosecond sequences can better confine the energy deposition than the femtosecond sequence by reducing the propagation artifacts.

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