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Scientific Axis 1: Predict and experiment light-induced surface modification processes

Scientific Axis 1: Predict and experiment light-induced surface modification processes, will mainly provide over the long term scientific and technical outcomes for the prediction of events occurring in the timescale of ultrashort laser pulse interaction with the surface material such as multi-scale multi-physics simulation algorithms of light absorption.

Main scientific objectives:

Identify and control the fundamental process guiding the transient evolution of light absorption

  • Predict the light energy distribution and the involved fundamental process
  • Develop multi-scale multi-physics simulation codes
  • Arrange spatially organized surface modification and defects by controlling local energy absorption
  • Control local energy absorption to provide highly precise and large scale techniques
  • Extend surface engineering process on multiscale and in 3D up to 3D optical design.

SCIENTIFIC BOTTLENECKS

  • Prediction of the large number of physical events occurring in the same timescale of laser pulse interaction with the surface material
  • Transient optical properties modeled by approaches that combine ab initio electronic structure calculations with quantum many-body physics
  • Material response at the atomic scale
  • Programmable spatio-temporal design ; adaptive feedback loops ; Optimization concepts
  • Coupling coherently laser light distribution with resonant excitation, surface roughness diffusion, and light-induced defects
  • Surface design by additive fabrication processes