Surface Charging and Impulsive Ion Ejection during Ultrashort Pulsed Laser Ablation
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- 19 February 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 88 (9) , 097603
- https://doi.org/10.1103/physrevlett.88.097603
Abstract
We report time-resolved studies using femtosecond laser pulses, accompanied by model calculations, that illuminate the difference in the dynamics of ultrashort pulsed laser ablation of different materials. Dielectrics are strongly charged at the surface on the femtosecond time scale and undergo an impulsive Coulomb explosion. This is not seen from metals and semiconductors where the surface charge is effectively quenched.Keywords
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