LIPSS manufacturing with regularity control through laser wavefront curvature
Keywords: 
LIPSS
Laser
Femtosecond
Nanostructure
Coherence
Regularity
Wavefront
Issue Date: 
2021
Publisher: 
Elsevier
ISSN: 
2468-0230
Note: 
This is an open access article under the CC BY-NC-ND license
Citation: 
San-Blas, A.; Martínez-Calderón, M. (Miguel); Granados, E. (Eduardo); et al. "LIPSS manufacturing with regularity control through laser wavefront curvature". Surfaces and Interfaces. 25, 2021,
Abstract
Laser-Induced Periodic Surface Structures (LIPSS) manufacturing is a convenient laser direct-writing technique for the fabrication of nanostructures with adaptable characteristics on the surface of virtually any material. In this paper, we study the influence of 1D laser wavefront curvature on nanoripples spatial regularity, by irradiating stainless steel with a line-focused ultrafast laser beam emitting 120 fs pulses at a wavelength of 800 nm and with 1 kHz repetition rate. We find high correlation between the spatial regularity of the fabricated nanostructures and the wavefront characteristics of the laser beam, with higher regularity being found with quasi-plane-wave illumination. Our results provide insight regarding the control of LIPSS regularity, which is essential for industrial applications involving the LIPSS generation technique.

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