14 November 2003 LiIO3 nanocrystals in SiO2 xerogels, a new material for nonlinear optics
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In recent years, a large amount of activity has been carried out searching new materials for second order non-linear optics. Nanostructured materials composed of a host matrix and optical active nanocrystals form a new part of this research field. Our present work consists in "doping" SiO2 matrices with 5 to 30% mass of LiIO3 nanocrystals. Indeed, α-LiIO3 is a compound known to be very efficient for second harmonic generation (SHG). This nanocomposite glass has been developped using sol-gel technics. Bulk samples have been first studied showing nanocrystallites with size ranging from 50 nm to 400 nm and second harmonic generation (SHG). Then thin layers have been elaborated using dip coating and spin coating technics. Being given that LiIO3 crystals present structurally a strong dipolar moment, non-linear optical properties could be enhanced using Corona discharges to orientate nanocrystals. This paper relates the fabrication process and the structural and optical characterizations of bulk and thin layer material.
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Jeremie Teyssier, Jeremie Teyssier, Ronan Le Dantec, Ronan Le Dantec, Christine Galez, Christine Galez, Yannick Mugnier, Yannick Mugnier, Jacques Bouillot, Jacques Bouillot, Jean-Claude Plenet, Jean-Claude Plenet, } "LiIO3 nanocrystals in SiO2 xerogels, a new material for nonlinear optics", Proc. SPIE 5222, Nanocrystals, and Organic and Hybrid Nanomaterials, (14 November 2003); doi: 10.1117/12.507309; https://doi.org/10.1117/12.507309

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