Abstract In this work, we report the growth and spectroscopic properties of high-quality Er:Yb:LuPO4 and Er:Yb:Ce:LuPO4 crystals which are grown by the high-temperature solution method for the first time to the best of our knowledge. The maximum polarization absorption cross sections and the full-width of half-maximum of the Er:Yb:LuPO4 are (3.32 × 10−20 cm2, 17 nm) and (2.41 × 10−20 cm2, 19 nm) for σ- and π-polarization, respectively. The up-conversion luminescence spectra and near-infrared luminescence spectra of both Er:Yb:LuPO4 and Er:Yb:Ce:LuPO4 crystals were recorded under 980 nm pumping. The results exhibit that the up-conversion energy losses are remarkably reduced in Er:Yb:Ce:LuPO4 crystal. Consequently, the luminescence intensity in the waveband of 1.5–1.6 μm of Er:Yb:Ce:LuPO4 is increased by two times compared to Er:Yb:LuPO4.

中文翻译：

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Er:Yb:LuPO 4 和 Er:Yb:Ce:LuPO 4 晶体的生长和光谱特性

摘要 在这项工作中，我们报告了第一次通过高温溶液法生长的高质量 Er:Yb:LuPO4 和 Er:Yb:Ce:LuPO4 晶体的生长和光谱特性。 . Er:Yb:LuPO4 的最大偏振吸收截面和半峰全宽分别为 (3.32 × 10−20 cm2, 17 nm) 和 (2.41 × 10−20 cm2, 19 nm) σ- 和分别为 π 极化。在 980 nm 泵浦下记录了 Er:Yb:LuPO4 和 Er:Yb:Ce:LuPO4 晶体的上转换发光光谱和近红外发光光谱。结果表明，Er:Yb:Ce:LuPO4 晶体的上转换能量损失显着降低。因此，与 Er:Yb:LuPO4 相比，Er:Yb:Ce:LuPO4 在 1.5-1.6 μm 波段的发光强度增加了两倍。