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Proceedings Paper

Femtosecond time-resolved studies of laser ablation
Author(s): Xianglei Mao; Samuel S. Mao; Richard E. Russo
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Paper Abstract

Laser ablation has proven to be an important technology in an increasing number of applications. The fundamental mechanisms underlying laser ablation processes are quite complicated, and include laser interactions with the target as well as plasma development off the target. While substantial progress has been achieved in understanding laser ablation on the nanosecond and picosecond time scales, it remains a considerable challenge to elucidate the underlying mechanisms during femtosecond laser ablation. We present experimental observations of plasma development inside silica glass during single femtosecond laser pulse (100 fs, 800 nm) irradiation. Using a femtosecond time-resolved imaging technique, we measured the evolution of a laser-induced plasma inside the glass that has an electron number density on the order of 1019 cm-3. Additionally, we observed an air plasma outside the target which forms long before the explosion of a material vapor plume.

Paper Details

Date Published: 13 September 2002
PDF: 7 pages
Proc. SPIE 4760, High-Power Laser Ablation IV, (13 September 2002); doi: 10.1117/12.482113
Show Author Affiliations
Xianglei Mao, Lawrence Berkeley National Lab. (United States)
Samuel S. Mao, Lawrence Berkeley National Lab. (United States)
Richard E. Russo, Lawrence Berkeley National Lab. (United States)


Published in SPIE Proceedings Vol. 4760:
High-Power Laser Ablation IV
Claude R. Phipps, Editor(s)

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