20 February 2015 Erbium distribution in single crystal YAG fibers grown by laser-heated pedestal growth technique
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Abstract
Single crystal (SC) yttrium aluminum garnet (YAG, Y3Al5O12) as a host material has the ability to be doped with high concentrations of Er3+ ions. We utilize this ability to grow a 50% Er3+ doped YAG SC fiber, which was inserted into a SC YAG tube. This rod-in-tube was used as a preform in our laser-heated pedestal growth (LHPG) apparatus to grow a fiber with a radial distribution of Er3+ ions. The work shows that there is a distribution of Er3+ ions from their fluorescence and two different techniques were used to measure the index of refraction.
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Craig D. Nie, Subhabrata Bera, Jeffrey E. Melzer, James A. Harrington, Elizabeth F. C. Dreyer, Stephen C. Rand, S. Trembath-Reichert, Christopher D. Hoef, "Erbium distribution in single crystal YAG fibers grown by laser-heated pedestal growth technique", Proc. SPIE 9342, Solid State Lasers XXIV: Technology and Devices, 934204 (20 February 2015); doi: 10.1117/12.2083588; https://doi.org/10.1117/12.2083588
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