Diagnostics of nanoparticle formation process by laser ablation in a background gas

Tatsuo Okada; Yoshiki Nakata; Mitsuo Maeda

doi:10.1117/12.470633

18 June 2002 Diagnostics of nanoparticle formation process by laser ablation in a background gas

Tatsuo Okada, Yoshiki Nakata, Mitsuo Maeda

Proceedings Volume 4637, Photon Processing in Microelectronics and Photonics; (2002) https://doi.org/10.1117/12.470633
Event: High-Power Lasers and Applications, 2002, San Jose, California, United States

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.

Citation Download Citation

Tatsuo Okada, Yoshiki Nakata, and Mitsuo Maeda "Diagnostics of nanoparticle formation process by laser ablation in a background gas", Proc. SPIE 4637, Photon Processing in Microelectronics and Photonics, (18 June 2002); https://doi.org/10.1117/12.470633

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