Time-resolved quantification of plasma accumulation induced by multi-pulse laser ablation using self-mixing interferometry

  title={Time-resolved quantification of plasma accumulation induced by multi-pulse laser ablation using self-mixing interferometry},
  author={Simone Donadello and Valentina Finazzi and A G Demir and Barbara Previtali},
  journal={Journal of Physics D: Applied Physics},
In this work a method based on self-mixing interferometry (SMI) is presented for probing the concentration of plasma plumes induced by multi-pulse laser ablation. An analytical model is developed to interpret the single-arm interferometric signal in terms of plasma electron number density. Its time dependence follows a power-law scaling which is determined by concurrent effects of plume accumulation and propagation. The model has been applied for the experimental study of plume formation at… 
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