The role of energy and phase relaxation (T1 and T2) in ultrafast laser ablation

The dynamics of ultrafast laser ablation have been studied by pump-probe experiments, monitoring the ablated ions by time-of-flight mass spectroscopy. For both dielectric and metal target materials, despite their substantial physical difference, a rather similar, general dependence of the ion yield...

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Bibliographic Details
Published in:Journal of physics. Conference series 2007-04, Vol.59 (1), p.1-4
Main Authors: Reif, Juergen, Costache, Florenta, Eckert, Sebastian
Format: Article
Language:English
Subjects:
Ablation
Laser ablation
Physics
Ultrafast lasers
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Summary:The dynamics of ultrafast laser ablation have been studied by pump-probe experiments, monitoring the ablated ions by time-of-flight mass spectroscopy. For both dielectric and metal target materials, despite their substantial physical difference, a rather similar, general dependence of the ion yield on the pump-probe delay has been observed: for short delays, the typical "coherence" peak occurs, then the signal goes down to zero, and after a longer delay, the signal increases again. This behaviour is discussed in a picture of energy and phase relaxation (T1, T2) mechanisms.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/59/1/001