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

D. Scuderi (1) , Ratiba Benzerga (2) , Bertrand Reynier (3) , Olivier Albert (1) , Jean Etchepare (1)

1 LOA - Laboratoire d'optique appliquée
2 GREMI - Groupe de recherches sur l'énergétique des milieux ionisés
3 MS - Matériaux et Structures

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. © 2005 Elsevier B.V. All rights reserved.

Domaines: Génie mécanique [physics.class-ph]; Génie mécanique [physics.class-ph]

D. Scuderi, Ratiba Benzerga, Bertrand Reynier, Olivier Albert, Jean Etchepare. Spectral and temporal characteristics of metallic nanoparticles produced by femtosecond laser pulses. Applied Surface Science, 2006, 252 (13 SPEC. ISS.), pp.4360-4363. ⟨10.1016/j.apsusc.2005.06.056⟩. ⟨hal-00830686⟩