%0 Journal Article %T Ce-doped LuAG single-crystal fibers grown from the melt for high-energy physics %+ Institut Lumière Matière [Villeurbanne] (ILM) %+ European Organization for Nuclear Research (CERN) %A Xu, Xiaodong %A Lebbou, Kheirreddine %A Moretti, Federico %A Pauwels, K. %A Lecoq, P. %A Auffray, E. %A Dujardin, Christophe %< avec comité de lecture %@ 1359-6454 %J Acta Materialia %I Elsevier %V 67 %P 232-238 %8 2014 %D 2014 %R 10.1016/j.actamat.2013.12.040 %Z Chemical Sciences %Z Physics [physics] %Z Engineering Sciences [physics]Journal articles %X Under a stationary stable regime undoped and Ce-doped LuAG (Lu3Al5O12) single-crystal fibers were grown by a micro-pulling-down technique. The meniscus length corresponding to the equilibrium state was <200 μm. Fluctuations in the fiber composition and pulling rate were found to have a significant effect on the properties of the fibers grown. A great improvement in the performance was found in samples containing low Ce concentrations (⩽0.1 at.%) and produced using pulling rates <0.5 mm min−1. Under such conditions a good lateral surface fiber quality was obtained and light propagation was significantly improved. Conversely, a high Ce concentration and a high pulling rate resulted in a strong degradation of the fiber surface quality causing defects to appear and a decrease in light output. %G English %L hal-02309440 %U https://univ-lyon1.hal.science/hal-02309440 %~ CNRS %~ UNIV-LYON1 %~ ILM %~ UDL %~ UNIV-LYON