Spectral evidence for collisionless absorption in subpicosecond laser-solid interactions

Authors
Hansen, CT Wilks, SC Young, PE
Citation
Ct. Hansen et al., Spectral evidence for collisionless absorption in subpicosecond laser-solid interactions, PHYS REV L, 83(24), 1999, pp. 5019-5022
Citations number
18
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
24
Year of publication
1999
Pages
5019 - 5022
Database
ISI
SICI code
0031-9007(199912)83:24<5019:SEFCAI>2.0.ZU;2-W
Abstract
Second-harmonic emission produced by the interaction of a 130-fs laser puls e with solid aluminum has been spectrally analyzed. For an angle of inciden ce near 20 degrees, the specular second harmonic is blueshifted when the la ser intensity exceeds 5 x 10(16) W/cm(2). This effect is also observed in p article-in-cell simulations of the experiment. The blueshift is interpreted as a signature of the onset of absorption due to the anomalous skin effect .