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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。
In this paper, PbO-0.25B2O3 as a flux, the use of top-seed method to obtain a larger block of Cd3Zn3B4O12 single crystal. Transmittance test results show that the UV cutoff wavelength of the crystal is located at 310 nm. The frequency doubling effect of the crystal was tested by the method of Kurtz-Perry. The result shows that the frequency doubling effect of the crystal is about 5 times that of KDP, and phase matching can be achieved. The optical damage threshold for crystals is about 840 MW (1064 nm, 10 ns). Thermal analysis of this crystal shows that the crystal of Cd3Zn3B4O12 will decompose above the melting point, which is also the most important factor that hinder the growth of high quality bulk Cd3Zn3B4O12 crystals.