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一种具有倍频效应的新型硼酸盐化合物La₂SrB₁₀O₁₉

A New Nonlinear Optical Material La₂SrB₁₀ O₁₉

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【Author】 CAO Jing, WANG Jun xin, FU Pei zhen, GUO Fan, YANG Zhi ping, WU Yi cheng (Department of Chemistry,University of Science and Technology of China,Hefei 230026,China) (Received 20 June 1999,accepted 20 November 1999)

【机构】中国科学技术大学化学系!合肥230026；

【摘要】在SrO La2 O3 B2 O3体系中合成出一种新的硼酸盐化合物La2 SrB10 O19。La2 SrB10 O19的晶体结构与La2 CaB10 O19相同。La2 SrB10 O19的粉末倍频效应 (SHG)大约是KH2 PO4 (KDP)的 2倍。差热分析结果表明该化合物为非同成分熔融化合物 ,转熔温度约为 983℃ ,可以用助熔剂法进行晶体生长。反射光谱研究表明La2 SrB10 O19的紫外吸收边在 30 0nm左右。更多还原

【Abstract】 A new mixed borate of lanthanum and strontium with the composition La 2SrB 10 O 19 has been identified in the system of La 2O 3 SrO B 2O 3.La 2SrB 10 O 19 is isostructural with La 2CaB 10 O 19 ,and exhibits a powder second harmonic generation (SHG) effect about twice that of KH 2PO 4(KDP).Differential thermal analysis showed La 2SrB 10 O 19 melts incongruently at about 983℃.It is possible to grow La 2SrB 10 O 19 crystal from suitable flux.The reflection spectrum showed that the cut off wavelength of La 2SrB 10 O 19 is about 300nm.更多还原