Optoacoustic response of a single submicronic gold particle revealed by the picosecond ultrasonics technique
CALBRIS, Gaëtan
Centre de recherches Paul Pascal [CRPP]
Université Sciences et Technologies - Bordeaux 1 [UB]
Centre de physique moléculaire optique et hertzienne [CPMOH]
Centre de recherches Paul Pascal [CRPP]
Université Sciences et Technologies - Bordeaux 1 [UB]
Centre de physique moléculaire optique et hertzienne [CPMOH]
RAVAINE, Serge
Centre de recherches Paul Pascal [CRPP]
Université Sciences et Technologies - Bordeaux 1 [UB]
< Reduce
Centre de recherches Paul Pascal [CRPP]
Université Sciences et Technologies - Bordeaux 1 [UB]
Language
en
Article de revue
This item was published in
Applied Physics Letters. 2009, vol. 95, n° 6, p. 061909 (1-3)
American Institute of Physics
English Abstract
The optoacoustic response of a single submicron (430 nm) gold particle embedded in a silica thin film is experimentally revealed by femtosecond pump-probe experiments. A semianalytical model is developed to calculate the ...Read more >
The optoacoustic response of a single submicron (430 nm) gold particle embedded in a silica thin film is experimentally revealed by femtosecond pump-probe experiments. A semianalytical model is developed to calculate the transient reflectivity accounting for optical index changes in both media and for particle and film surface displacements. The displacement of the particle-film interface turns out to be the major contribution to the measured signal. The amplitude of the acoustical component of the transient reflectivity is modulated by the depth at which the particle is buried in the film.Read less <
English Keywords
gold
high-speed optical techniques
photoacoustic effect
reflectivity
refractive index
silicon compounds
thin films
ANR Project
Etude de l'amplification de la Conduction Thermique dans des Réseaux de Nanoparticules - ANR-06-NANO-0020
Origin
Hal imported