A new laser crystal, Cr/Er/Pr:CaLu_0.2La_0.8Ga₃O₇ (Cr/Er/Pr:LuCLGO), was successfully grown by the Czochralski method for the first time. The structural parameters of Cr/Er/Pr:LuCLGO crystal were determined by the x-ray Rietveld refinement method. Optical absorption, fluorescence spectra and lifetime decay profiles were measured for the crystal. The co-doped Cr³⁺ ion expands the absorption cross-section considerably for 400–700 nm bands, which is beneficial for xenon lamp pumping. Also the co-doped Pr³⁺ ions decrease the population of the Er³⁺:⁴I_13/2 energy state effectively. The energy transfer efficiencies of the Er³⁺:⁴I_11/2 → Pr³⁺:¹G₄ and Er³⁺:⁴I_13/2 → Pr³⁺:³F₄ processes were calculated, showing that Pr³⁺ ions can play an important role as deactivators for Er³⁺ ions. Furthermore, the energy transfer mechanisms among Cr³⁺, Er³⁺ and Pr³⁺ ions were studied. The results suggest that Cr/Er/Pr:LuCLGO crystal is a new promising laser medium for 2.7 μm xenon lamp pumping solid-state lasers.

一种新的激光晶体Cr / Er / Pr：CaLu _0.2 La _0.8 Ga ₃ O ₇（Cr / Er / Pr：LuCLGO）首次通过Czochralski方法成功生长。Cr / Er / Pr：LuCLGO晶体的结构参数是通过X射线Rietveld细化方法确定的。测量晶体的光吸收，荧光光谱和寿命衰减曲线。共掺杂的Cr ³⁺离子大大扩展了400-700 nm波段的吸收截面，这对于氙灯泵浦是有益的。同样，共掺杂的Pr ³⁺离子也会降低Er ³⁺的种群：⁴ I _13/2能量状态有效。铒的能量转移效率³⁺：⁴我_11/2 →镨³⁺：¹ ģ ₄和Er ³⁺：⁴我_13/2 →镨³⁺：^3个˚F ₄分别计算过程，显示出镨³⁺离子可以作为Er ³⁺离子的钝化剂发挥重要作用。此外，研究了Cr ³⁺，Er ³⁺和Pr ³⁺离子之间的能量转移机理。结果表明，Cr / Er / Pr：LuCLGO晶体是一种新的有前途的2.7激光介质μ米氙灯泵浦的固态激光器。