Laser surface structuring of diamond with ultrashort Bessel beams

We investigate the effect of ultrafast laser surface machining on a monocrystalline synthetic diamond sample by means of pulsed Bessel beams. We discuss the differences of the trench-like microstructures generated in various experimental conditions, by varying the beam cone angle, the energy and pul...

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Bibliographic Details
Published in:Scientific reports 2018-09, Vol.8 (1), p.14021-11, Article 14021
Main Authors: Kumar, Sanjeev, Eaton, Shane M., Bollani, Monica, Sotillo, Belén, Chiappini, Andrea, Ferrari, Maurizio, Ramponi, Roberta, Di Trapani, Paolo, Jedrkiewicz, Ottavia
Format: Article
Language:English
Subjects:
639/624/1075
639/624/399
Biosensors
Humanities and Social Sciences
Lasers
multidisciplinary
Plasma
Science
Science (multidisciplinary)
Trenches
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Summary:We investigate the effect of ultrafast laser surface machining on a monocrystalline synthetic diamond sample by means of pulsed Bessel beams. We discuss the differences of the trench-like microstructures generated in various experimental conditions, by varying the beam cone angle, the energy and pulse duration, and we present a brief comparison of the results with those obtained with the same technique on a sapphire sample. In diamond, we obtain V-shaped trenches whose surface width varies with the cone angle, and which are featured by micrometer sized channels having depths in the range of 10–20  μ m. By laser writing crossed trenches we are also able to create and tailor on the diamond surface pillar-like or tip-like microstructures potentially interesting for large surface functionalization, cells capturing and biosensing.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-32415-0