Elsevier, Journal of Non-Crystalline Solids, (377), p. 105-109
DOI: 10.1016/j.jnoncrysol.2012.12.025
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Pr3+-Yb3+ co-doped transparent ZrF4-based bulk and planar waveguide glass ceramics (GCs) have been fabricated using the physical vapor deposition. X-ray diffraction and transmission electron microscopy analysis have shown the presence of a single crystalline phase that belongs to the LaF3-ZrF4 system. Upon 980 nm excitation, blue, orange and red emissions have been obtained both in bulk and waveguides. Intense luminescence of Yb3+ ions has been observed after excitation at 476 nm and is ascribed by to energy transfer (ET) from Pr3+ to Yb3+. The ET efficiency was estimated to be 92% for 0.5 mol% Pr3+-10 mol% Yb3+ co-doping.