Abstract Herein we report the growth of new RxLayScz(BO3)4 (x + y+z = 4, R = Sm, Tb) crystals with large second-harmonic generation (SHG) responses. The obtained compounds, grown from eutectic LiBO2-LiF flux by the TSSG method, crystallize in the space group P321 with the cell parameters a = 9.800(15) A and c = 7.9565(7) A for Sm0.34La0.68Sc2.98(BO3)4 and a = 9.7976(7) A and c = 7.9567(12) A for Tb0.23La0.77Sc3(BO3)4. These crystalline materials also exhibit luminescent properties related to the optical transitions of Tb3+ and Sm3+; specifically, Tb0.23La0.77Sc3(BO3)4 shows a strong green emission that is dominated by the 5D4 to 7F5 transition. The studied crystals’ SHG intensities were higher than those of KDP crystals, revealing their potential uses in various nonlinear optics applications.

中文翻译：

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新型硼酸钪 RxLayScz(BO3)4 (x+y+z=4, R=Sm, Tb)：合成、生长、结构和光学特性

摘要在此我们报告了具有大二次谐波产生 (SHG) 响应的新型 RxLayScz(BO3)4 (x + y+z = 4, R = Sm, Tb) 晶体的生长。获得的化合物，通过 TSSG 方法从共晶 LiBO2-LiF 通量中生长，在空间群 P321 中结晶，对于 Sm0.34La0.68Sc2.98（Sm0.34La0.68Sc2.98（ BO3)4 和 a = 9.7976(7) A 和 c = 7.9567(12) A 对于 Tb0.23La0.77Sc3(BO3)4。这些结晶材料还表现出与 Tb3+ 和 Sm3+ 的光学跃迁相关的发光特性；具体而言，Tb0.23La0.77Sc3(BO3)4 显示出强烈的绿色发射，主要由 5D4 到 7F5 转变。所研究晶体的 SHG 强度高于 KDP 晶体，揭示了它们在各种非线性光学应用中的潜在用途。