A diagnostic set-up for time-resolved imaging of laser-induced ablation

Year: 1996

Authors: Siano S., Pini R., Salimbeni R., Vannini M.

Autors Affiliation: Istituto di Elettronica Quantistica, C.N.R. (Ital. Natl. Res. Council), Via Panciatichi 56/30, I-50127 Firenze, Italy

Abstract: A pump-and-probe diagnostic arrangement was devised to obtain time-resolved imaging of plasma formation and shock wave evolution during photoablation of solid targets induced with a Xe-Cl excimer laser. The relatively simple optical scheme of illumination and image collection provided highly spatially and temporally resolved images composed of shadowgraphs and fringe structures. The interpretation of such illumination patterns is discussed, indicating that their analysis can furnish quantitative information on the local density distribution of the interaction volume and on associated photoacoustic phenomena. The presented set-up can find useful utilization to investigate and control laser-induced ablation processes in various application fields, such as material processing and laser surgery.

Journal/Review: OPTICS AND LASERS IN ENGINEERING

Volume: 25 (1)      Pages from: 1  to: 12

More Information: National Council for Scientific Research, NCSR. – Istituto di Elettronica Quantistica, C.N.R. (Italian National Research Council), Via Panciatichi 56/30, I-50127 Firenze, Italy
KeyWords: Excimer lasers; Imaging techniques; Laser pulses; Photoacoustic effect; Plasma diagnostics; Process control, Pump and probe diagnostics; Shock wave evolution; Time resolved imaging, Laser ablation
DOI: 10.1016/0143-8166(95)00083-6

Citations: 17
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