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Photonics 2017, 4(1), 8; doi:10.3390/photonics4010008

Ultrafast Laser Pulses for Structuring Materials at Micro/Nano Scale: From Waveguides to Superhydrophobic Surfaces

1
National Laboratory for Nanotechnology in Agribusiness (LNNA), Embrapa Instrumentação (CNPDIA), 13560-970 São Carlos, SP, Brazil
2
Carlos Institute of Physics, University of São Paulo, PO Box 369, 13560-970 São Carlos, SP, Brazil
*
Authors to whom correspondence should be addressed.
Received: 6 December 2016 / Accepted: 25 January 2017 / Published: 31 January 2017
(This article belongs to the Special Issue Ultrafast Photonics and Attosecond Sciences)
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Abstract

The current demand for fabricating optical and photonic devices displaying high performance, using low-cost and time-saving methods, prompts femtosecond (fs)-laser processing as a promising methodology. High and low repetition femtosecond lasers enable surface and/or bulk modification of distinct materials, which can be used for applications ranging from optical waveguides to superhydrophobic surfaces. Herein, some fundamental aspects of fs-laser processing of materials, as well as the basics of their most common experimental apparatuses, are introduced. A survey of results on polymer fs-laser processing, resulting in 3D waveguides, electroluminescent structures and active hybrid-microstructures for luminescence or biological microenvironments is presented. Similarly, results of fs-laser processing on glasses, gold and silicon to produce waveguides containing metallic nanoparticles, analytical chemical sensors and surface with modified features, respectively, are also described. The complexity of fs-laser micromachining involves precise control of material properties, pushing ultrafast laser processing as an advanced technique for micro/nano devices. View Full-Text
Keywords: femtosecond laser; device fabrication; micromachining; optical glasses; doped polymer femtosecond laser; device fabrication; micromachining; optical glasses; doped polymer
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Correa, D.S.; Almeida, J.M.P.; Almeida, G.F.B.; Cardoso, M.R.; De Boni, L.; Mendonça, C.R. Ultrafast Laser Pulses for Structuring Materials at Micro/Nano Scale: From Waveguides to Superhydrophobic Surfaces. Photonics 2017, 4, 8.

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