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Model description of surface charging during ultrafast pulsed laser ablationof materials

Journal article
Authors Nadya Bulgakova
Razvan Stoian
Arkadi Rosenfeld
Eleanor E B Campbell
Ingolf Hertel
Published in Applied Physics A
Volume 79
Pages 1153-1155
ISSN 0947-8396
Publication year 2004
Published at Department of Physics (GU)
Pages 1153-1155
Language en
Keywords laser ablation
Subject categories Physical Sciences


We present a model describing the dynamical mechanisms responsible for generating fast ion ejection under ultra-short pulsed laser irradiation. The model is based on a simplified drift–diffusion approach describing the evolution of the laser-generated charge carriers, their transport, and the electric field generated as a result of quasi-neutrality breaking in the irradiated target. The importance of different processes in generating the non-thermal material-ejection mechanisms is discussed. A common frame is applied to dielectrics, semiconductors, and metals and different dynamical behaviour is observed. The modelling results are in good agreement with fs pump–probe studies and measurements of the velocity distributions of the emitted ions.

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