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Title

High speed inscription of uniform, large-area laser-induced periodic surface structures in Cr films using a high repetition rate fs laser

AuthorsRuiz de la Cruz, A.; Lahoz, Ruth; Siegel, Jan ; Fuente, Germán F. de la ; Solís Céspedes, Javier
Issue Date2014
PublisherOptical Society of America
CitationOptics Letters 39(8): 2491-2494 (2014)
AbstractWe report on the fabrication of laser-induced periodic surface structures in Cr films upon high repetition rate fs laser irradiation (up to 1 MHz, 500 fs, 1030 nm), employing beam scanning. Highly regular large-area (9 cm2) gratings with a relative diffraction efficiency of 42% can be produced within less than 6 min. The ripple period at moderate and high fluences is 0.9 μm, with a small period of 0.5 μm appearing at lower energies. The role of the irradiation parameters on the characteristics of the laser-induced periodic surface structures (LIPSS) is studied and discussed in the frame of the models presently used. We have identified the polarization vector orientation with respect to the scan direction as a key parameter for the fabrication of high-quality, large-area LIPSS, which, for perpendicular orientation, allows the coherent extension of the sub-wavelength structure over macroscopic distances. The processing strategy is robust in terms of broad parameter windows and applicable to other materials featuring LIPSS. © 2014 Optical Society of America.
Description4 pags.; 5 figs.; LIPSS. © 2014 Optical Society of America OCIS codes: (050.6624) Subwavelength structures; (160.3900) Metals; (240.3695) Linear and nonlinear light scattering from surfaces; (350.3390) Laser materials processing; (320.7130) Ultrafast processes in condensed matter, including semiconductors.
URIhttp://hdl.handle.net/10261/111465
DOI10.1364/OL.39.002491
Identifiersdoi: 10.1364/OL.39.002491
issn: 1539-4794
Appears in Collections:(ICMA) Artículos
(CFMAC-IO) Artículos
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