Presentation
17 March 2023 Generation of micro-pillars by ultrafast first-order Bessel beam
Valeria Viviana Belloni, Mostafa Hassan, Luc Froehly, Luca Furfaro, Cyril Billet, Remo Giust, Francois Courvoisier
Author Affiliations +
Abstract
The Bessel beam is a versatile tool for several applications thanks to its propagation-invariant spatial profile. We demonstrate for the first time the possibility of generating high aspect ratio micro-pillars with an ultrafast first-order Bessel beam on a sapphire sample. A single pulse expels matter shaped as a high-aspect ratio pillar. The height can exceed 10 µm with a typical diameter of 500 nm. Importantly, our method does not require milling or deposition of new material. The process is also fast since it requires only a single pulse, and there is no need for sample post-processing.
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Valeria Viviana Belloni, Mostafa Hassan, Luc Froehly, Luca Furfaro, Cyril Billet, Remo Giust, and Francois Courvoisier "Generation of micro-pillars by ultrafast first-order Bessel beam", Proc. SPIE PC12411, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII, PC124110E (17 March 2023); https://doi.org/10.1117/12.2650125
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KEYWORDS
Bessel beams

Ultrafast phenomena

Sapphire

Etching

Femtosecond phenomena

Glasses

Solids

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