大口径有源反射镜片状放大器增益特性实验研究  

Experimental Research on Gain Characteristic in Large Aperture Active Mirror Slab Amplifiers

作　　者：刘晶[1,2] 施翔春[1] 李磊[1] 程小劲[1] 杨中国[1] 王建磊[1] 

机构地区：[1]中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室,上海201800 [2]中国科学院大学,北京100049

出　　处：《中国激光》2013年第4期38-42,共5页Chinese Journal of Lasers

摘　　要：构建了一套氙灯抽运,大口径有源反射镜片状放大器实验装置。实验研究了布儒斯特角入射的有源反射镜钕玻璃放大器的增益特性。钕玻璃几何尺寸为890mm×450mm×50mm,掺杂浓度为1.2%(质量分数)。最佳延时下,测得不同电压下的小信号增益系数和储能效率。充电电压为22kV,氙灯放电脉宽为0.51ms时,储能效率为1.94%,小信号增益系数为0.0371cm-1。实验研究了横向放大自发辐射(ASE)和氙灯发光效率对增益特性的影响。The structure of large aperture active mirror slab amplifier is presented, which is pumped by Xe-lamps. The application of active mirror in Nd.. glass laser amplifier is explored. The size of Nd：glass is 890 mm×450 min×50 mm. Doping density is 1.2 % of mass fraction. The small signal gain coefficient and energy storage efficiency of different voltages are measured at the best delay time. The energy storage efficiency is 1.94 % and the small signal gain coefficient is 0. 0371 cm 1 when the charging voltage is 22 kV and the Xe-lamp＇s discharging pulse width is 0.51 ms. Experiments are designed to research the effect of lateral amplified spontaneous emission （ASE） and luminous efficiency of Xe-lamp on the small signal gain coefficient.

关 键 词：激光器 激光放大器 有源反射镜 布儒斯特角 氙灯 

分 类 号：TN248[电子电信—物理电子学]