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San-Blas, A. (Alejandro); Martínez-Calderón, M. (Miguel); Buencuerpo, J. (Jerónimo); et al. "Femtosecond laser fabrication of LIPSS-based waveplates on metallic surfaces". Applied Surface Science. 520 (146328), 2020,
A fast and reliable method for the fabrication of polarization modifying devices using femtosecond laser is
reported. A setup based on line focusing is used for the generation of LIPSS on stainless steel, processing at
different speeds between 0.8 and 2.4 mm/s with constant energy per pulse of 1.4 mJ. SEM and AFM characterizations of the LIPSS show a progressive increase in period as the processing speed increases, while height
remains approximately constant in the studied range. Optical characterization of the devices shows an induced
change in the polarization of the reflected beam that varies with the processing speed, which allows a controlled
fabrication of these devices.