对利用和频技术将脉冲钛宝石激光向短波长方向扩展的可能性进行了研究 .在仔细分析了脉冲钛宝石激光器结构的基础上 ,确定了用 KTP晶体实现钛宝石激光与倍频后剩余的 Nd∶ YAG激光和频的方案 .实验中选用两块 KTP作为和频晶体 ,切割角度分别为 θ=85°,φ=90°和 θ=76°,φ=90°,采用 (A)类相位匹配方式 ,获得了 45 9.3～ 5 0 9.6 nm的和频光 ,最大转换效率为 15 .2 % ,最大输出能量为 14.6 m J(在 46 3nm处 ) The possibility of expanding the pulsed Ti: sapphire laser to the short wavelength by using the frequency technique was studied.On the basis of careful analysis of the structure of the pulsed Ti: sapphire laser, it was confirmed that the remaining Ti Nd: YAG laser and the frequency of the experiment.In the experiment, two KTPs were chosen as the sum frequency crystal, the cutting angles were respectively θ = 85 °, φ = 90 ° and θ = 76 °, φ = 90 °. Matching mode, we obtained 45 9.3 ~ 5 0 9.6 nm and the frequency of light, the maximum conversion efficiency of 15.2%, the maximum output energy of 14.6 m J (at 46 3nm)