Femtosecond laser ablation of TiO2 photocatalyst by multiphoton absorption

K. Takahasi; K. Furusawa; M. Obara

doi:10.1109/CLEOPR.1999.811638

Femtosecond laser ablation of TiO₂ photocatalyst by multiphoton absorption

K. Takahasi, K. Furusawa, M. Obara

Institute of Multidisciplinary Research for Advanced Materials (IMRAM)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We process a flat TiO₂ crystal surface by femtosecond pulse laser ablation. We create micro-holes densely on the flat surface to increase the surface area. The dense holes increase the surface area and also decrease the light reflection because the light reflects many times in the conical hole, and so the photocatalysis effect is greatly accelerated by these two effects. Femtosecond laser ablation reduces collateral (thermal and mechanical) damage of ablation and increases the reproducibility. The TiO₂ ablation is due to a multiphoton absorption process.

Original language	English
Title of host publication	CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	90-91
Number of pages	2
ISBN (Electronic)	0780356616, 9780780356610
DOIs	https://doi.org/10.1109/CLEOPR.1999.811638
Publication status	Published - 1999 Jan 1
Event	1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999 - Seoul, Korea, Republic of Duration: 1999 Aug 30 → 1999 Sep 3

Publication series

Name	CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
Volume	1

Other

Other	1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999
Country/Territory	Korea, Republic of
City	Seoul
Period	99/8/30 → 99/9/3

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Computer Networks and Communications
Physics and Astronomy(all)

Access to Document

10.1109/CLEOPR.1999.811638

Cite this

Takahasi, K., Furusawa, K., & Obara, M. (1999). Femtosecond laser ablation of TiO₂ photocatalyst by multiphoton absorption. In CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics (pp. 90-91). [811638] (CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics; Vol. 1). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CLEOPR.1999.811638

Femtosecond laser ablation of TiO₂ photocatalyst by multiphoton absorption. / Takahasi, K.; Furusawa, K.; Obara, M.

CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics. Institute of Electrical and Electronics Engineers Inc., 1999. p. 90-91 811638 (CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Takahasi, K, Furusawa, K & Obara, M 1999, Femtosecond laser ablation of TiO₂ photocatalyst by multiphoton absorption. in CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics., 811638, CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics, vol. 1, Institute of Electrical and Electronics Engineers Inc., pp. 90-91, 1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999, Seoul, Korea, Republic of, 99/8/30. https://doi.org/10.1109/CLEOPR.1999.811638

Takahasi K, Furusawa K, Obara M. Femtosecond laser ablation of TiO₂ photocatalyst by multiphoton absorption. In CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics. Institute of Electrical and Electronics Engineers Inc. 1999. p. 90-91. 811638. (CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics). https://doi.org/10.1109/CLEOPR.1999.811638

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