测试了应用于神光Ⅱ系列装置93片N31型钕玻璃的小信号增益系数。结果表明,Nd2O3质量分数为2.2%的钕玻璃平均小信号增益系数为0.0387 cm-1,Nd2O3质量分数为3.0%的钕玻璃平均小信号增益系数为0.0416 cm-1,两种浓度的钕玻璃不同样品间小信号增益系数的起伏范围分别为0.86%和0.76%。根据所测定的增益值,表明N31型钕玻璃的增益起伏符合神光Ⅱ系列装置要求,为实现该装置中每一路增益性能的平衡提供了有力保障,也为今后对更大尺寸钕玻璃增益性质的控制提供了经验。 The small signal gain coefficient of 93 N32 neodymium glasses used in SG Ⅱ series was tested. The results show that the average small-signal gain coefficient of neodymium glass with Nd2O3 mass fraction of 2.2% is 0.0387 cm-1, the average small-signal gain coefficient of neodymium glass with Nd2O3 mass fraction of 3.0% is 0.0416 cm-1, the neodymium glass with two concentrations is different The fluctuation range of the small signal gain coefficient between samples is 0.86% and 0.76% respectively. Based on the measured gain values, it is shown that the gain fluctuation of N31-type neodymium glass complies with the requirements of Shen Guang II series devices and provides a strong guarantee for the balance of the gain performance of each device in the device. In addition, The control provided the experience.