采用高压釜法合成了单相、致密的LiInS2多晶原料,采用改进的Bridgman晶体生长技术进行红外非线性光学晶体LiInS2的生长研究,获得了12 mm×40 mm的高质量完整单晶.对所获得的LiInS2晶体进行了组分分析、高分辨X射线衍射、激光损伤阈值等测试表征,测试结果表明:晶体存在硫过量和锂不足(NLi: N In<1),各组分稍微偏离化学计量比;LiInS2晶体的 (040)面的半峰宽为78.84'',表明晶体具有较好的完整性;晶体的激光损伤阈值为109 MW/cm2,有待于通过提高晶体质量和晶体表面的质量来进一步提高.
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