https://doi.org/10.1140/epjd/e2007-00197-2
Sidebands in the light absorption of driven metallic nanoparticles
1
Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 (ULP-CNRS), BP 43, 23 rue du Loess, 67034 Strasbourg Cedex 2, France
2
Institut für Physik, Universität Augsburg, Universitätsstraße 1, 86135 Augsburg, Germany
3
Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
Corresponding author: a weick@physik.fu-berlin.de
Received:
28
March
2007
Published online:
20
June
2007
The dynamics of the surface plasmon in laser-driven metallic nanoparticles is described by means of a master-equation formalism. Within the Markov approximation, the dynamics is studied for different regimes ranging from weak excitation in photoabsorption experiments to strong excitation in pump-probe spectroscopy. It is shown that two collective levels are sufficient to describe the dynamics of the surface plasmon. On this basis, we predict the appearance of sidebands in the absorption spectrum of the probe laser field in pump-probe experiments.
PACS: 78.67.Bf – Nanocrystals and nanoparticles / 73.20.Mf – Collective excitations / 71.45.Gm – Exchange, correlation, dielectric and magnetic response functions, plasmons
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007
