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Proceedings Paper

Microscopic and spectroscopic imaging of laser-induced forward transfer and its application to material transfer
Author(s): Yoshiki Nakata; Tatsuo Okada; Mitsuo Maeda
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Paper Abstract

As an investigation of the process of laser-induced forward transfer (LIFT), the behaviors of atoms, thermally radiating hot droplets and comparatively cold droplets were observed by two-dimensional laser-induced fluorescence (2D-LIF), laser light scattering (LLS) and thermal radiation. The observations were done with different parameters such as ablation laser energy, film thickness and gas pressure. The condition for the deposition of smaller film was guided. On the other hand, as an application, material transfer by LIFT was experimented. Rhodamine 610 laser dye film, which was deposited on silica substrate by LIFT, emitted fluorescence with an excitation by a second harmonic wave of the Nd:YAG laser. Experimental observations show that the fluorescence intensity of the deposited film was dependent on the LIFT process condition. The optimum condition was attained with a 50 nm thickness of the base gold film and 49 mJ/cm2 of the ablation laser fluence and in vacuum condition.

Paper Details

Date Published: 2 April 2004
PDF: 15 pages
Proc. SPIE 5399, Laser-Assisted Micro- and Nanotechnologies 2003, (2 April 2004); doi: 10.1117/12.552818
Show Author Affiliations
Yoshiki Nakata, Kyushu Univ. (Japan)
Tatsuo Okada, Kyushu Univ. (Japan)
Mitsuo Maeda, Kyushu Univ. (Japan)


Published in SPIE Proceedings Vol. 5399:
Laser-Assisted Micro- and Nanotechnologies 2003

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