本文首次报道了有机非线性光学材料二苯甲酮(DPK)单晶生长条件和方法。采用降温法在乙醇溶液中培养出50mm×80mm×50mm大尺寸的单晶,对单晶进行了定向形貌分析,测定了红外光谱和质谱,用紫外光谱测试了晶体的透射波段,用1064nm的Nd~(3+):YAG激光辐射晶体产生532nm的倍频光,其倍频强度近似KDP单晶。 This paper reports for the first time the growth conditions and method of benzophenone (DPK) single crystal in organic nonlinear optical materials. The single crystals with size of 50mm × 80mm × 50mm were grown in ethanol solution by cooling method. The morphology of the single crystal was analyzed. The infrared spectrum and mass spectrum were measured. The transmission band of the crystal was measured by ultraviolet spectrum. Nd ~ (3 +): YAG laser radiating crystal produce 532nm frequency doubling light, its frequency multiplying intensity is similar to KDP single crystal.