Abstract
The Yb3+ doped LiBi(WO4)2 fibers single crystals have been pulled using the micro-pulling down technique (µ-PD) with controlled fiber diameter and under stationary stable growth conditions. The corresponding crystallization interface was flat, with meniscus length equal to the fiber radii. The pulling rate used was in the range of 2–6mmh−1. We have determined the monophased field of LiBi1−xYbx(WO4)2 and observed that the lattice parameters decrease as a function of Yb3+ substitution in Bi3+ sites. The structural characterization has been studied by X-ray diffraction (XRD), X-ray fluorescence (XRF) method and Raman spectroscopy. We also performed micro-luminescence characterizations and drawn the decay time for both of the 1at% (Yb3+) doped LiBi(WO4)2 fiber and powders.
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