Eur. Phys. J. B (2015) 88: 29
https://doi.org/10.1140/epjb/e2014-50795-6

Regular Article

Acoustical wave emission from embedded noble nanoparticles induced by ultrashort laser pulses

Bogolyubov Institute for Theoretical Physics, NAS of Ukraine, 14-b Metrologichna Str., 03143 Kyiv, Ukraine

^a e-mail: ngrigor@bitp.kiev.ua

Received: 13 November 2014
Published online: 21 January 2015

Abstract

The theory is developed for sound waves emitted by Au, Ag and Cu nanoparticles embedded in the plexiglass matrix under ultrashort laser pulses irradiation. Analytical expressions are obtained for the amplitude and power of the longitudinal spherical acoustic oscillations as functions of density and elastic properties of the medium, the laser pulse duration, electron temperature, particle radii, and electron-phonon coupling constant. The factors affecting the dynamics of the power damping of these waves are studied in detail.