本文介绍了高质量非线性光学晶体GdxY1 xCa4 O(B0 3 ) 3 (GdYCOB)的生长 ;在这类晶体的Y向实现了 1.0 64μm激光的Ⅱ类二倍频 (SHG)和I类三倍频 (THG)的非临界相位匹配 (NCPM) :在x =0 .2 0的晶体中实现倍频NCPM ,基频输入功率为 110mW时 ,输出的 5 32nm绿光为 4 0 .3mW ,转换效率达 36.7% ;在x =0 .2 2的晶体中实现三倍频的NCPM ,输入功率为 133mW时 ,输出的 35 5nm紫外光为 19.7mW。在输入功率为 80mW时 ,转换效率为 2 1%。 In this paper, the growth of high quality nonlinear optical crystal GdxY1xCa4O (B0 3) 3 (GdYCOB) is described. In the Y direction of this kind of crystal, the second-order frequency doubling (SHG) (THG) Non-critical Phase Matching (NCPM): When the frequency doubling NCPM is realized in a crystal with x = 0.200, the output power of the 532nm green light is 4.03mW when the fundamental input power is 110mW, and the conversion efficiency reaches 36.7%. The triplet NCPM was realized in the crystal with x = 0.22. The output of 35 5 nm UV light was 19.7 mW when the input power was 133 mW. At an input power of 80mW, the conversion efficiency is 21%.