Ni^2+ doped glass ceramic fiber fabricated by melt-in-tube method and successive heat treatment

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Abstract
Glass ceramic fibers containing Ni2+ doped LiGa5O8 nanocrystals were fabricated by a melt-in-tube method and successive heat treatment. Fiber precursors were prepared by drawing at high temperature where fiber core glass was melted while fiber clad glass was softened. After heat treatment, LiGa5O8 nanocrystals were precipitated in the fiber core. Excited by 980 nm laser, efficient broadband near-infrared emission was observed in the glass ceramic fiber compared to that of precursor fiber. The melt-in-tube method can realize controllable crystallization and is suitable for fabrication of novel glass ceramic fibers. The Ni2+-doped glass ceramic fiber is promising for broadband optical amplification.
Funding Information
  • Fundamental Research Funds for the Central Universities (2013ZM0001)
  • Guangdong Natural Science Foundation (S2011030001349)
  • National Natural Science Foundation of China (NSFC) (51102096, 51302087)
  • the China Postdoctoral Science Foundation (2015T80903)

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