Molecular Dynamics study of rare-earth doped Mg-silicate nanoparticles in vitreous silica: from the preform to the fiber

J Turlier and S Chaussedent and X Bidault and NB Gaumer and D Guichaoua and P Raso and H Fneich and A Mehdi and DR Neuville and M Vermillac and W Blanc, FIBER LASERS AND GLASS PHOTONICS: MATERIALS THROUGH APPLICATIONS, 10683, 106832W (2018).

DOI: 10.1117/12.2306777

Formation of rare-earth doped nanoparticles into silica matrix has been modelized by Molecular Dynamics simulations. Preforms with molar composition 0.10MgO-0.90SiO(2) and 0.01EuO(3/2)-0.10MgO-0.89SiO(2) have been investigated to have an insight on the structure and chemical composition of the nanoparticles, as well as the rare-earth ions local environment and their clustering. We have finally applied a uniaxal elongation of the rare-earth doped preform in order to mimic the drawing step that changes a preform into a fiber. We present herein first results on the modification of the nanoparticles size distribution.

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