Phys. Rev. Lett. 99, 046103 (2007) [4 pages]Femtosecond Field Ion Emission by Surface Optical RectificationReceived 16 February 2007; published 26 July 2007 We show that a model based on the surface optical rectification effect associated with the nonlinear response of free electrons may explain quantitatively, without adjustable parameters, all the observed features of the ultrafast laser-assisted field-ion emission from metal tips. Moreover, the same model provides also a plausible explanation for the low-fluence ultrafast laser ablation recently observed in metal surfaces and nanoparticles. We further test our model with experiments of ultrafast laser-assisted field-ion emission from tungsten tips in the tomographic atom probe. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.046103
DOI:
10.1103/PhysRevLett.99.046103
PACS:
68.43.Tj, 42.65.−k, 78.68.+m
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