Fiber Single-Crystal Growth from the Melt for Optical Applications |
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| Authors: | Kheirréddine Lebbou Didier Perrodin Valery I Chani Alain Brenier Olivier Tillement Ouassila Aloui Jean Marie Fourmigue Julien Didierjean François Balembois Patrick Gorges |
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| Affiliation: | Physical Chemistry of Luminescent Materials, Claude Bernard/Lyon 1 University, CNRS UMR 5620, 69622 Villeurbanne Cedex, France; FiberCryst SAS, F-69100 Villeurbanne, France; Laboratoire Charles Fabry de l'Institut d'Optique, UMR 8501, Centre Universitaire, 91403 Orsay Cedex, France |
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| Abstract: | The micro-pulling-down technique has been applied to produce undoped and 0.1% Nd3+-doped Y3Al5O12 garnet single-crystal fibers with controlled diameter. The hot zone construction and fiber-pulling conditions have been optimized. As a result, growth of transparent and homogeneous fiber crystals has been achieved. The crystals have been grown under 105 Pa (1 atm) of argon atmosphere, with the pulling rate varied in the range of 0.3–2.0 mm/min. One hundred percent of the starting melt has been normally transformed into a crystalline material, with an empty crucible ready for the next growth procedure. The as-produced fibers demonstrate promising optical properties. |
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