Web Release Date: July 14,
Periodic Nanovoid Structures via Femtosecond Laser Irradiation
and
Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan, Photon Craft Project, ICORP, JST, Keihanna-plaza, Super-lab 2-5, 1-7 Hikaridai, Seika-cho, Kyoto, 619-0237, Japan, and Photon Craft Project, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences and Japan Science and Technology Agency, Keihanna-plaza, Super-lab 2-5, 1-7 Hikaridai, Seika-cho, Kyoto, 619-0237, Japan
Received June 1, 2005
Revised June 23, 2005
Abstract:
We have observed periodically aligned nanovoid structures inside a conventional borosilicate glass induced by a single femtosecond (fs) laser beam for the first time, to our knowledge. The spherical voids of nanosized diameter were aligned spontaneously with a period along the propagation direction of the laser beam. The period, the number of voids, and the whole length of the aligned void structure were controlled by changing the laser power, the pulse number, and the position of the focal point.
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