Surface Charging and Impulsive Ion Ejection during Ultrashort Pulsed Laser Ablation

R. Stoian; A. Rosenfeld; D. Ashkenasi; I. V. Hertel; N. M. Bulgakova; E. E. B. Campbell

doi:10.1103/PhysRevLett.88.097603

Surface Charging and Impulsive Ion Ejection during Ultrashort Pulsed Laser Ablation

R. Stoian, A. Rosenfeld, D. Ashkenasi, I. V. Hertel, N. M. Bulgakova, and E. E. B. Campbell

Phys. Rev. Lett. 88, 097603 – Published 19 February 2002

Abstract

We report time-resolved studies using femtosecond laser pulses, accompanied by model calculations, that illuminate the difference in the dynamics of ultrashort pulsed laser ablation of different materials. Dielectrics are strongly charged at the surface on the femtosecond time scale and undergo an impulsive Coulomb explosion. This is not seen from metals and semiconductors where the surface charge is effectively quenched.

Received 24 August 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.097603

Authors & Affiliations

R. Stoian^*, A. Rosenfeld, D. Ashkenasi^†, and I. V. Hertel

Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born Strasse 2a, D-12489 Berlin, Germany

N. M. Bulgakova

Institute of Thermophysics SB RAS, 1 Academician Lavrentyev Avenue, 630090 Novosibirsk, Russia

E. E. B. Campbell^‡

Department of Experimental Physics, Göteborg University and Chalmers University of Technology, SE-41296 Göteborg, Sweden

^*Also at National Institute for Laser, Plasma and Radiation Physics, 76900 Bucharest, Romania.
^†Present address: LMTB, Schwarzschildstrasse 8, D-12489 Berlin, Germany.
^‡Corresponding author. Email address: f3aec@fy.chalmers.se