Abstract
Ultra fast laser interaction with surfaces results in fast electronic and thermal ablation processes. The way, how the energy is deposited, determines to a large extent, how efficiently the different processes contribute to laser‐matter interaction. It will be shown, how laser analytical techniques can help to identify the time behavior of the energy deposition, the composition and energy of the emitted particles. Atomic Force Microscopy (AFM) allows determining the surface topography after different stages of ultra‐short laser‐matter interaction. Both techniques combined can yield substantial information for better understanding the physics involved. The appearance of so‐called nano‐hillocks on the surface can be regarded as a typical topographic feature associated with fast electronic processes (correlated with the existence of hot electrons), in particular, demonstrating the efficient localization of energy in small volumes.
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