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arXiv · 1006.0100

Materials processing with a tightly focused femtosecond vortex laser pulse

Cyril Hnatovsky·Vladlen G. Shvedov·Wieslaw Krolikowski·Andrei V. Rode
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Abstract

This letter is the first demonstration of material modification using tightly focused femtosecond laser vortex beams. Double-charge femtosecond vortices were synthesized with the polarization-singularity beam converter described in Ref [1] and then focused using moderate and high numerical aperture optics (viz., NA = 0.45 and 0.9) to ablate fused silica and soda-lime glasses. By controlling the pulse energy we consistently machine high-quality micron-size ring-shaped structures with less than 100 nm uniform groove thickness.

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Cyril Hnatovsky, Vladlen G. Shvedov, Wieslaw Krolikowski, Andrei V. Rode. 2010-06-01. Materials processing with a tightly focused femtosecond vortex laser pulse. https://arxiv.org/abs/1006.0100

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