Space- and time-resolved optical diagnosis for the study of laser ablation plasma dynamics

Abstract The dynamics of transient plasmas generated by high-fluence nanosecond laser ablation has been investigated by means of optical methods (time- and space-resolved emission spectroscopy and fast ICCD imaging). Systematic measurements have been carried out on plasma produced in vacuum (10−8 Torr residual pressure) by Nd:YAG laser (10 ns, 532 nm) irradiation of Aluminum targets. Al neutral atoms and different charge state ions have been monitored through the evolution of corresponding spectral lines. The study evidenced the presence of two different groups of particles, tentatively related to two distinct ejection mechanisms. This behavior has been confirmed by the fast ICCD (20 ns gate) recording of the total optical emission of the plume. The application of the relative line intensity method to the study of the excitation temperature axial profile is equally discussed.

[1]  Costas Fotakis,et al.  Energy distribution of ions produced by excimer-laser ablation of solid and molten targets , 1999 .

[2]  V. P. N. Nampoori,et al.  Electron density and temperature measurements in a laser produced carbon plasma , 1997 .

[3]  A. Miotello,et al.  Laser-pulse sputtering of aluminum: Vaporization, boiling, superheating, and gas-dynamic effects. , 1994, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[4]  V. Berardi,et al.  Chargel species analysis as a diagnostic tool for laser produced plasma characterization , 1996 .

[5]  Y. Gamal,et al.  Characteristics of Cu plasma produced by a laser interaction with a solid target , 2003 .

[6]  Mark S. Tillack,et al.  Spectroscopic characterization of laser-induced tin plasma , 2005 .

[7]  S. Amoruso,et al.  Propagation of LaMnO3 laser ablation plume in oxygen gas , 2006 .

[8]  Jim J. Chang,et al.  Laser‐plasma interaction during visible‐laser ablation of methods , 1996 .

[9]  M. Agop,et al.  Experimental and theoretical investigations of a laser-produced aluminum plasma. , 2008, Physical review. E, Statistical, nonlinear, and soft matter physics.

[10]  W. C. Martin,et al.  Atomic Spectra Database , 1999 .

[11]  S. Amoruso,et al.  Characterization of LaMnO3 laser ablation in oxygen by ion probe and optical emission spectroscopy , 2005 .

[12]  S. Amoruso,et al.  Propagation dynamics of a LaMnO3 laser ablation plume in an oxygen atmosphere , 2006 .

[13]  J. Hermann,et al.  Diagnostics of the early phase of an ultraviolet laser induced plasma by spectral line analysis considering self-absorption , 1998 .

[14]  R. Russo,et al.  Explosive change in crater properties during high power nanosecond laser ablation of silicon , 2000 .

[15]  Bulgakov,et al.  Double layer effects in laser-ablation plasma plumes , 2000, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.