在使用叠加脉冲方式进行激光打孔时，为了在一台激光器上实现大能量的长脉冲与高峰值的短脉冲激光叠加输出，采用同一工作物质不同增益区域来分别获得两种特性的脉冲激光同轴叠加输出的方法、在单台激光器上获得了两种脉冲激光的叠加输出。结果表明，在双氙灯脉冲抽运Nd∶YAG激光器中，腔长840mm、使用双平-平腔结构、工作物质长度150mm的情况下，采用高电阻率的磷酸钛氧钾电光Q开关对中心光束进行调Q，得到了脉宽10ms的长脉冲与63ns窄脉宽脉冲序列的稳定叠加脉冲输出，在抽运频率9Hz的情况下，最高得到了934W的平均功率，叠加脉冲包络能量10.4J，峰值功率46.7kW。此结果说明输出的叠加脉冲激光可以很好地满足激光打孔的需求。

In order to get high energy long pulse and high peak power short pulse in one laser at the same time, coaxial superimposed pulse laser output with two characteristics was obtained in a single laser by using different gain areas of the same working material. The results show that by using potassium titanyl phosphate electro-optical Q-switch with high resistivity, the superimposed pulse with long pulsewidth of 10ms and short pulsewidth of 63ns is gotten in bi-xenon lamp pumped pulse Nd∶YAG laser (cavity length of 840mm, double flat-flat cavity structure and working material length of 150mm). With pump frequency of 9Hz, peak power of 46.7kW, mean power of 934W and envelope energy of superimposed pulse of 10.4J were obtained. The experiment results show that the superimposed pulse laser output can reach the demands of laser drilling.