Investigation of ultrashort laser excitation of aluminum and tungsten by reflectivity measurements

  title={Investigation of ultrashort laser excitation of aluminum and tungsten by reflectivity measurements},
  author={T Genieys and Matthias P. L. Sentis and Olivier P. Uteza},
  journal={Applied Physics A},
We determine the laser-induced ablation threshold fluence in air of aluminum and tungsten excited by single near-infrared laser pulses with duration ranging from 15 to 100 fs. The ablation threshold fluence is shown to be constant for both metals, extending the corresponding scaling metrics to few-optical-cycle laser pulses. Meanwhile, the reflectivity is measured providing access to the deposited energy in the studied materials on a wide range of pulse durations and incident fluences below and… 
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