Three-dimensional hole drilling of silica glass from the rear surface with femtosecond laser pulses
Optics Letters, Vol. 26, Issue 23, pp. 1912-1914 (2001)
http://dx.doi.org/10.1364/OL.26.001912
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Abstract
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 4-mu;m diameter were more than 200 µm 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 America
[Optical Society of America ]
OCIS Codes
(140.3440) Lasers and laser optics : Laser-induced breakdown
(160.2750) Materials : Glass and other amorphous materials
(220.4610) Optical design and fabrication : Optical fabrication
Citation
Yan Li, Kazuyoshi Itoh, Wataru Watanabe, Kazuhiro Yamada, Daisuke Kuroda, Junji Nishii, and Yongyuan Jiang, "Three-dimensional hole drilling of silica glass from the rear surface with femtosecond laser pulses," Opt. Lett. 26, 1912-1914 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-23-1912
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