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首页> 外文期刊>Crystal growth & design >Hydrothermal single-crystal growth of Lu_2O_3 and Lanthanide-Doped Lu_2O_3
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Hydrothermal single-crystal growth of Lu_2O_3 and Lanthanide-Doped Lu_2O_3

机译：Lu_2O_3和掺镧掺杂的Lu_2O_3的水热单晶生长

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The hydrothermal growth of bulk single crystals of lutetium oxide (Lu _2O_3) is reported. Crystals were grown at 600-650 °C at 2 kbar in water with high concentrations (10-20 M) of KOH as a mineralizer. Under these conditions crystals formed spontaneously and could also be transported to suitable seeds to form large (3-8 mm/edge) single crystals. Experiments were done to optimize transport conditions and the quality of the crystals for the first time. The crystals were doped with trivalent laser active ions such as Er~(3+) and Yb~(3+). Absorption spectra of the doped materials were determined. Thermal conductivities of the pure single crystals as well as of the Yb-doped crystals were determined between room temperature and 77 K. The conductivity of the pure crystals increases significantly at lower temperatures as expected, and is significantly greater than that of YAG. The Yb-doped crystals have a thermal conductivity almost unchanged from the pure host, which is promising for use in high-energy laser applications.
机译：据报道，氧化oxide（Lu _2O_3）的块状单晶在水热中生长。晶体在2kbar的水中于600-650°C的环境中以高浓度（10-20 M）的KOH作为矿化剂生长。在这些条件下，晶体是自发形成的，也可以被运输到合适的晶种中，以形成大的（3-8 mm /边缘）单晶。首次进行实验以优化运输条件和晶体质量。晶体中掺有三价激光活性离子，例如Er〜（3+）和Yb〜（3+）。确定了掺杂材料的吸收光谱。测定了室温至77 K之间的纯单晶以及掺Yb的晶体的热导率。如预期的那样，纯晶体的电导率在较低的温度下显着增加，并且显着大于YAG。掺Yb的晶体的导热率几乎与纯基质相同，这有望用于高能激光应用中。

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