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Title: 3D features of modified photostructurable glass-ceramic with infrared femtosecond laser pulses
Author: Fernández Pradas, Juan Marcos
Serrano Velasquez, Damarys
Bosch i Puig, Salvador
Morenza Gil, José Luis
Serra Coromina, Pere
Keywords: Làsers
Issue Date: 10-Nov-2010
Publisher: Elsevier B.V.
Abstract: The exclusive ability of laser radiation to be focused inside transparent materials makes lasers a unique tool to process inner parts of them unreachable with other techniques. Hence, laser direct-write can be used to create 3D structures inside bulk materials. Infrared femtosecond lasers are especially indicated for this purpose because a multiphoton process is usually required for absorption and high resolution can be attained. This work studies the modifications produced by 450 fs laser pulses at 1027 nm wavelength focused inside a photostructurable glass-ceramic (Foturan®) at different depths. Irradiated samples were submitted to standard thermal treatment and subsequent soaking in HF solution to form the buried microchannels and thus unveil the modified material. The voxel dimensions of modified material depend on the laser pulse energy and the depth at which the laser is focused. Spherical aberration and selffocusing phenomena are required to explain the observed results.
Note: Versió postprint del document publicat a:
It is part of: Applied Surface Science, 2010, vol. 257, num. 12, p. 5219-5222
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ISSN: 0169-4332
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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