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Proceedings Paper

Diagnostics of nanoparticle formation process by laser ablation in a background gas
Author(s): Tatsuo Okada; Yoshiki Nakata; Mitsuo Maeda
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Paper Abstract

We have developed a new visualization technique named as re- decomposition laser-induced fluorescence (ReD-LIF) technique, clusters or nano-particles synthesized in the laser ablation plume are decomposed by laser irradiation and the atoms generated by the decomposition are visualized by LIF. This technique is very sensitive than the other visualization technique, because we can use the sensitive LIF technique. Decomposition of nano-particles by the laser irradiation is considered theoretically and the characteristics of ReD-LIF technique are compared with other visualization techniques such as laser-induced fluorescence and Rayleigh scattering. The ReD-LIF technique has been applied for the visualization of the Si nano-particle synthesis process. Based on the result, the particle dynamics in the ablation plume generated in the background gas during Si nano-particle synthesis are described besides the basic characteristics of the ReD-LIF signal.

Paper Details

Date Published: 18 June 2002
PDF: 10 pages
Proc. SPIE 4637, Photon Processing in Microelectronics and Photonics, (18 June 2002); doi: 10.1117/12.470633
Show Author Affiliations
Tatsuo Okada, Kyushu Univ. (Japan)
Yoshiki Nakata, Kyushu Univ. (Japan)
Mitsuo Maeda, Kyushu Univ. (Japan)

Published in SPIE Proceedings Vol. 4637:
Photon Processing in Microelectronics and Photonics
Jan J. Dubowski; Koji Sugioka; Malcolm C. Gower; Willem Hoving; Richard F. Haglund Jr.; Alberto Pique; Frank Traeger; Jan J. Dubowski; Willem Hoving, Editor(s)

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