搭建了一套氙灯抽运的有源反射镜钕玻璃激光放大器系统。实验研究了有源反射镜钕玻璃激光放大器的增益特性及能量提取。钕玻璃几何尺寸为380 mm×160 mm×30 mm, 掺杂浓度为2.2 %(质量分数)。充电电压为23 kV时, 实验测得系统的小信号增益系数为0.056 cm-1, 储能效率为2.0%。充电电压为22 kV时, 输出激光光斑尺寸为 126 mm ×126 mm, 脉冲宽度为5 ns；预放注入能量为6.67 J时, 激光放大系统获得最大为349 J的能量输出。系统静态波前峰谷(PV)值为8.38λ。

The structure of active mirror Nd∶glass laser amplifier is presented, which is pumped by Xe-lamps. The gain characteristics and energy extraction of the active mirror Nd∶glass laser amplifier are experimentally studied. The size of Nd∶glass is 380 mm×160 mm×30 mm, and the doping concentration of Nd:glass is 2.2%(mass fraction). Experimental results show that when the charging voltage is 23 kV, the small signal gain coefficient of the system is 0.056 cm-1, and the energy storage efficiency is 2.0%. The spot size of the output laser is 126 mm×126 mm and the pulse width is 5 ns when the charging voltage is 22 kV. The laser amplifier obtains the maximum output energy of 349 J when the injected energy is 6.67 J. The peak to valley (PV) value of the static wavefront of the system is 8.38λ.