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Title: Advanced materials processing based on interaction of laser beam and a medium
Authors: Sugioka, K.
Obata, K.
Midorikawa, K.
Hong, M.H. 
Wu, D.J.
Wong, L.L.
Lu, Y.F. 
Chong, T.C. 
Keywords: Ablation
F 2 laser
Fused silica
Hard material
Hybrid laser processing
Laser-induced plasma
Multiwavelength excitation
Precision microfabrication
VUV laser
Issue Date: 2-Jun-2003
Citation: Sugioka, K., Obata, K., Midorikawa, K., Hong, M.H., Wu, D.J., Wong, L.L., Lu, Y.F., Chong, T.C. (2003-06-02). Advanced materials processing based on interaction of laser beam and a medium. Journal of Photochemistry and Photobiology A: Chemistry 158 (2-3) : 171-178. ScholarBank@NUS Repository.
Abstract: Hybrid laser processing for precision microfabrication of hard materials, in which the interaction of a conventional pulsed laser beam and a medium on the material surface leads to effective ablation and modification, is reviewed. The main role of the medium is to produce strong absorption of the nanosecond laser beam by the materials. Simultaneous irradiation with the vacuum ultraviolet (VUV) laser beam which possesses extremely small laser fluence greatly improves the ablation quality and modification efficiency for hard materials such as fused silica, crystal quartz, sapphire, GaN, and SiC by the ultraviolet (UV) laser irradiation (VUV-UV multiwavelength excitation process). Metal plasma generated by the laser beam effectively assists high-quality ablation of transparent materials, resulting in microstructuring, cutting, color marking, printing and selective metallization of glass materials (laser-induced plasma-assisted ablation (LIPAA)). The detailed discussion presented here includes the ablation mechanism of hybrid laser processing. © 2003 Elsevier Science B.V. All rights reserved.
Source Title: Journal of Photochemistry and Photobiology A: Chemistry
ISSN: 10106030
DOI: 10.1016/S1010-6030(03)00031-5
Appears in Collections:Staff Publications

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