Ultrafast laser ablation of metals with a pair of collinear laser pulses

Journal Article · Mon Nov 10 04:00:00 EST 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3026533· OSTI ID:21175745

Amoruso, S; Bruzzese, R; Wang, X; Xia, J ^[1]

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1. Coherentia CNR-INFM and Dipartimento di Scienze Fisiche, Universita degli Studi di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli (Italy)

We investigated the process of ultrafast laser ablation of metallic targets induced by a pair of identical laser pulses, with either p or s polarizations, temporally delayed from {approx_equal}1 ps to a few nanoseconds. We used fast ion probe diagnostics to characterize the ion plume at the moderate laser intensity ({approx_equal}10{sup 12} W/cm{sup 2}) typically employed in ultrafast laser deposition and material processing. We observed a consistent time-correlated enhancement of the ion yield and velocity, which lends itself to an interesting and useful method for manipulating ablation plasma characteristics. The mechanisms producing this feature are also discussed.

• OSTI ID: 21175745
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 19 Vol. 93; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABLATION
DEPOSITION
ELECTROMAGNETIC RADIATION
ION PROBES
IONS
LANGMUIR PROBE
LASERS
METALS
PLASMA
PLASMA PRODUCTION
POLARIZATION
PULSES