| Issue |
Europhys. Lett.
Volume 43, Number 2, July II 1998
|
|
|---|---|---|
| Page(s) | 213 - 218 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00342-y | |
| Published online | 01 September 2002 | |
Measurement of the third-order nonlinear susceptibility of Ag nanoparticles in glass in a wide spectral range
1
Second Faculty of Sciences, Università di Milano - 22100
Como, Italy
2
INFM, Istituto di Scienze Matematiche, Fisiche e Chimiche,
Università di Milano 22100 Como, Italy
3
INFM, Dipartimento di Fisica, Università di Padova Via Marzolo 8,
35131 Padova, Italy
4
INFM, Dipartimento di Elettronica, Università di Pavia - Pavia, Italy
Received:
22
December
1997
Accepted:
25
May
1998
We determined the third-order susceptibility 
of a thin
composite film formed by silver nanoclusters embedded in soda-lime
glass. Ag aggregation was promoted by irradiating an Ag-Na
ion-exchanged glass with an 
beam. dispersion
was measured by phase-mismatched degenerate four-wave mixing in the
380–470 nm spectral range, with 0.5 ps laser pulse duration. Close to
the surface plasmon resonance of Ag metallic clusters, the
amplitude exceeds by a factor of 104 the value of
substrate glass. We also measured a phase of 
and a dynamics
characterized by 
, 3 and 0.9 ps decay times, ascribed to
hot-electrons-lattice thermalization in the clusters, followed by
thermal diffusion toward the matrix and relaxation of the whole system
to the starting temperature.
PACS: 78.47.+p – Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter / 78.66.-w – Optical properties of specific thin films, surfaces, and low-dimensional structures: superlattices, quantum well structures, multilayers, and microparticles / 42.65.-k – Nonlinear optics
© EDP Sciences, 1998
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.