Spectral and temporal characteristics of metallic nanoparticles produced by femtosecond laser pulses

We study the time of flight optical emission from titanium and tungsten nanosized particles, generated through femtosecond laser-matter interaction in vacuum, in the wavelength spectral range from 300 to 900 nm. Typical spectra consist of broadband structureless signals similar to black body emissio...

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Bibliographic Details
Published in:Applied surface science 2006-04, Vol.252 (13), p.4360-4363
Main Authors: Scuderi, D., Benzerga, R., Albert, O., Reynier, B., Etchepare, J.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Electron and ion emission by liquids and solids
impact phenomena
Exact sciences and technology
Femtosecond laser pulses
Impact phenomena (including electron spectra and sputtering)
Laser-beam impact phenomena
Materials science
Metallic nanoparticles
Nanoscale materials and structures: fabrication and characterization
Optical emission
Other topics in nanoscale materials and structures
Physics
Plasma Physics
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Summary:We study the time of flight optical emission from titanium and tungsten nanosized particles, generated through femtosecond laser-matter interaction in vacuum, in the wavelength spectral range from 300 to 900 nm. Typical spectra consist of broadband structureless signals similar to black body emission from a macroscopic object. Nanoparticles temperature, deduced from their emission spectra, decreases drastically as a function of their time of arrival at a given distance from the target. This behaviour is seen to be independent of individual particle velocities.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2005.06.056