5 June 2008 Femtosecond lasers: potential tools for manufacturing high-frequency negative refractive materials
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Proceedings Volume 7022, Advanced Laser Technologies 2007; 70220L (2008) https://doi.org/10.1117/12.803938
Event: Advanced Laser Technologies 2007, 2007, Levi, Finland
Abstract
Metamaterials and photonic crystals are presented as the main approaches to achieve artificial negative refractive materials. Alone or associated with lithography techniques, femtosecond laser constitutes a potential tool for manufacturing negative refractive materials in the range from GHz to optical frequencies. Multi-photon photopolymerization of transparent materials and micro/nano-machining of metallic thin films are promising methods to obtain negative refractive photonic crystals and, respectively, metamaterials. Preliminary experiments of thin-film micro-machining using a femtosecond oscillator-amplifier laser are described. Further methods to improve the femtosecond laser machining are proposed.
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R. Dabu, R. Dabu, M. Zamfirescu, M. Zamfirescu, M. Dumitru, M. Dumitru, I. Anghel, I. Anghel, } "Femtosecond lasers: potential tools for manufacturing high-frequency negative refractive materials", Proc. SPIE 7022, Advanced Laser Technologies 2007, 70220L (5 June 2008); doi: 10.1117/12.803938; https://doi.org/10.1117/12.803938
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