本文以PbO-0.25B2O3为助熔剂,利用顶部籽晶法获得了较大块的Cd3Zn3B4O12单晶.透过率测试结果显示该晶体的紫外截止波长位于310 nm处.利用Kurtz-Perry的方法对晶体的倍频效应进行了测试,结果显示该晶体的粉末倍频效应约为KDP的5倍,且能实现相位匹配.晶体的光损伤阈值约为840 MW(1064 nm,10 ns).该晶体的热分析结果显示Cd3Zn3B4O12晶体在熔点温度以上会产生分解,这也是阻碍高质量大块Cd3Zn3B4O12晶体生长最主要的因素.
Nonlinear optical crystal Cd3Zn3B4O12 was obtained by top seeded solution growth (TSSG) method using PbO-0.25B2O3 as flux. Transmission spectrum shows the UV cutoff for the as-grown crystal is about 310 nm. Second-harmonic generation (SHG) property measured by the Kurtz-Perry method indicates that Cd3Zn3B4O12 crystal could be phase matchable and the SHG efficiency is about 5 times as large as that of KDP. The surface damage threshold of the crystal is 840 MW/cm2 at 1064 nm for 10 ns. Differential thermal analysis confirms that Cd3Zn3B4O12 tends to decompose upon its melting point, which is the major factor constraint to grow high quality Cd3Zn3B4O12 crystal.
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