Articles
  • Crystal growth and thermal conductivity of an Tm3+-doped Y2O3 for IR eye-safe laser
  • J. H. Muna,*, A. Jouinib, A. Novoselovc, A. Yoshikawac and T. Fukudac
  • a Gyeongbuk Hybrid Technology Institute, 36 Goeyeon-Dong, Yeongcheon, Gyeongbuk, 770-170, KOREA b Physical Chemistry of Luminescent Materials, UMR 5620 CNRS, Claude Bernard /Lyon1 University, 69622 Villeurbanne, France c Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
Abstract
Refractory undoped and Tm3+-doped (0.15, 1, 3 and 5 mol.%) Y2O3 single crystals were grown by the micro-pulling-down method. Chemical analysis showed a homogeneous distribution of Tm3+ dopant along the crystal rod. The dependence of thermal conductivity on Tm3+ concentration in Tm3+ : Y2O3 was characterized. The value decreases when the Tm3+ concentration increases in the host but still stays high enough (7.46Wm−1K−1) when doped with Tm3+ (5 mol.%), which represents a promising material for an infrared eye-safe laser application.

Keywords: Tm3+ activator, Thermal conductivity, Micro-pulling-down method, Crystal growth from the melt, Rare-earth sesquioxides, Solid-state laser host.

This Article

  • 2011; 12(2): 169-172

    Published on Apr 30, 2011

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