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Femtosecond laser fabrication of LIPSS-based waveplates on metallic surfaces

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San Blas, A. and Martínez Calderón, M. and Buencuerpo Fariña, Jerónimo and Sánchez Brea, Luis Miguel and Hoyo, J. del and Gómez Aranzadi, M. and Rodriguez, A. and Olaizola, S.M. (2020) Femtosecond laser fabrication of LIPSS-based waveplates on metallic surfaces. Applied surface science, 520 . ISSN 0169-4332

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Official URL: http://dx.doi.org/10.1016/j.apsusc.2020.146328


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Abstract

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.


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© 2020 The Authors.
Ministerio de Economía y Competitividad (MINECO) “Ecograb” of “Programa Estatal de Investigacion, Desarrollo e Innovacion Orientada a los Retos de la Sociedad” (RTC-2016-5277-5); co-financed with structural funds of the European Union.
LASER4SURF has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 768636.

Uncontrolled Keywords:Coupled-wave analysis; Broad-band; Photonic structures; Form birefringence; Stainless-steel; Formulation; Uniform
Subjects:Sciences > Physics > Optics
ID Code:61234
Deposited On:07 Jul 2020 19:13
Last Modified:07 Jul 2020 19:13

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