Article ID Journal Published Year Pages File Type
5370547 Applied Surface Science 2005 5 Pages PDF
Abstract

We have performed a comparative study of UV laser ablation of SrTiO3 with nanosecond- and sub-picosecond sources, respectively. The experiments were performed with lasers at a wavelength of 248 nm and pulse durations of 34 ns and 500 fs. Femtosecond ablation turns out to be more efficient by one order of magnitude and eliminated the known problem of cracking of SrTiO3 during laser machining with longer pulses. In addition, the cavities ablated with femtosecond pulses display a smoother surface with no indication of melting and well-defined, sharp edges. These effects can be explained by the reduced thermal shock effect on the material by using ultrashort pulses.

Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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