Kinetic study of laser damage initiation by creation of an electron plasma from absorbing nano-inclusions

Pierre Grua; J. Morreeuw; Herve Bercegol

doi:10.1117/12.461685

9 April 2002 Kinetic study of laser damage initiation by creation of an electron plasma from absorbing nano-inclusions

Pierre Grua, J. Morreeuw, Herve Bercegol

Proceedings Volume 4679, Laser-Induced Damage in Optical Materials: 2001; (2002) https://doi.org/10.1117/12.461685
Event: Boulder Damage, 2001, Boulder, CO, United States

Abstract

Laser energy deposition and redistribution in metal nanoparticles embedded in SiO₂ glass is studied by a kinetic model, which takes into account photon absorption, electron-electron and electron phonon interactions, as well as heat transfer to the glass matrix. The collision operators are usually written in an integral form. In this work, we transform those in differential operators with the use of Landau approximation. This approach allows to perform kinetic calculations beyond the nanosecond time scale. For a laser intensity relevant to high power lasers, the energy deposition on the electron population can lead to a significant Fermi smearing within very short times. An important part of the electron population is driven beyond a typical 10 eV energy, and consequently this can result in the creation of a plasma around the particle.

Citation Download Citation

Pierre Grua, J. Morreeuw, and Herve Bercegol "Kinetic study of laser damage initiation by creation of an electron plasma from absorbing nano-inclusions", Proc. SPIE 4679, Laser-Induced Damage in Optical Materials: 2001, (9 April 2002); https://doi.org/10.1117/12.461685

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