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首页> 外文期刊>Journal of Crystal Growth >Transparent and inclusion-free RE1-xLaxVO4 (RE = Gd, Y) single crystal fibers grown by LHPG technique
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Transparent and inclusion-free RE1-xLaxVO4 (RE = Gd, Y) single crystal fibers grown by LHPG technique

机译：通过LHPG技术生长的透明且不含杂质的RE1-xLaxVO4（RE = Gd，Y）单晶纤维

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摘要

We describe in this work the growth of pure and Nd-doped transparent fibers of RE1-xLaxVO4 (RE = Gd, Y and x = 0.2, 0.4 and 1.0) by the laser heated pedestal growth technique. The fibers obtained were in the range of 400-700 mu m in diameter and up to 40 mm in length. Our crystalline fibers were free of black phases and microscopic inclusions. Temperature measurements on the molten zone surface showed that the liquid temperature suddenly dropped approximately 200 degrees C. This decrease in the liquid temperature is here associated with an self-adjustment of the melt composition during the fiber growth. Crystallographic data shows that the obtained fibers (x = 0.2 and 0.4) belong to the I4(1)/amd symmetry, with the exception of LaVO4 (x = 1.0), which crystallized with P2(1) symmetry. Optical absorption and lifetime measurements on Nd-doped fibers showed the same good optical properties as the Nd:YVO4 bulk crystals, with larger spectral linewidths which are desired for diode laser pumping. (c) 2006 Elsevier B.V. All rights reserved.
机译：我们在这项工作中描述了通过激光加热基座生长技术来生长纯净且掺钕的RE1-xLaxVO4透明纤维（RE = Gd，Y和x = 0.2、0.4和1.0）。所得纤维的直径在400-700μm的范围内，并且长度最大为40mm。我们的结晶纤维不含黑相和微观夹杂物。在熔融区表面上的温度测量结果表明，液体温度突然下降了大约200摄氏度。液体温度的这种降低在此与纤维生长过程中熔体成分的自我调节有关。晶体学数据表明，所得纤维（x = 0.2和0.4）属于I4（1）/ amd对称性，但LaVO4（x = 1.0）以P2（1）/ n对称性结晶。掺钕光纤上的光吸收和寿命测量显示出与Nd：YVO4块状晶体相同的良好光学性能，具有较大的光谱线宽，这是二极管激光泵浦所希望的。 （c）2006 Elsevier B.V.保留所有权利。

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