By moving silica glass in a preprogrammed structure, we directly produced three-dimensional holes with femtosecond laser pulses in single step. When distilled water was introduced into a hole drilled from the rear surface of the glass, the effects of blocking and redeposition of ablated material were greatly reduced and the aspect ratio of the depth of the hole was increased. Straight holes of diameter were more than deep. Three-dimensional channels can be micromachined inside transparent materials by use of this method, as we have demonstrated by drilling a square-wave-shaped hole inside silica glass.
© 2001 Optical Society of AmericaFull Article | PDF Article
Zhaoxin Wu, Hongbing Jiang, Zhaohui Zhang, Quan Sun, Hong Yang, and Qihuang Gong
Opt. Express 10(22) 1244-1249 (2002)
Ran An, Yan Li, Yanping Dou, Hong Yang, and Qihuang Gong
Opt. Express 13(6) 1855-1859 (2005)
Christopher J. Hensley, Daniel H. Broaddus, Chris B. Schaffer, and Alexander L. Gaeta
Opt. Express 15(11) 6690-6695 (2007)