Time-resolved spectroscopy measurements of a titanium plasma induced by nanosecond and femtosecond lasers

O. Albert , S. Roger , Y. Glinec , J. C. Loulergue , J. Etchepare , C. Boulmer-Leborgne , Jacques Perrière (1) , E. Million

1 GPS - Groupe de Physique des Solides

We have studied the plasma induced at the surface of a titanium target following irradiation with femtosecond and nanosecond laser pulses. Time-resolved imaging and spectroscopic measurements allowed us to evidence some features specific to the femtosecond-laser-induced plasma. In this ultrashort interaction regime, we could discriminate between three different velocity populations in the plasma expansion. Coulomb explosion firstly creates highly energetic Ti+ ions, which are followed by atomic neutral titanium and lastly by nanoscale titanium oxide clusters.

O. Albert, S. Roger, Y. Glinec, J. C. Loulergue, J. Etchepare, et al.. Time-resolved spectroscopy measurements of a titanium plasma induced by nanosecond and femtosecond lasers. Applied physics. A, Materials science & processing, 2003, 76 (3), pp.319. ⟨10.1007/s00339-002-1815-8⟩. ⟨hal-00018737⟩