多光束泵浦中红外激光器  

Multi-beam pump mid-infrared laser

作　　者：沈兆国[1] 付洁[1] 唐刚锋[1] 毛鑫[1] 程建新[1] 羊毅[1] 吕新杰[2] 

机构地区：[1]中航工业洛阳电光设备研究所,河南洛阳471009 [2]南京大学固体微结构国家重点实验室,江苏南京210093

出　　处：《应用光学》2013年第3期517-520,共4页Journal of Applied Optics

摘　　要：为了获得高功率高效率3μm～5μm中红外激光输出,利用双声光调Q晶体,通过高重复频率驱动调Q同步技术和LD侧面泵浦双棒串接技术,获得高功率高光束质量1.06μm激光双端输出,外置起偏器获得4束激光输出,利用波片偏振旋光原理,实现4束偏振态一致的激光输出,泵浦非线性晶体PPLT进行频率变换,实现高功率3μm～5μm中红外激光输出。在电源输入电流30A、调Q驱动频率10kHz的条件下,获得最高功率10.6W的3.9μm中红外激光,1.06μm～3.9μm转化效率为9.5%。实验结果表明:通过双声光调Q技术和LD侧面泵浦双棒串接技术,可以实现4束高重复频率窄脉宽1.06μm偏振激光输出,泵浦PPLT可获得高功率3.9μm中红外激光输出。To acquire high power and high efficiency mid-infrared laser output, using double a- cousto-optic Q-switched crystal, through high repetition rate drive Q-switched synchronization technology and LD-side-pumped two-rod series connection technology, high power and high beam quality 1.06 μm laser two-port output was acquired, laser output of four beams was got by exterior polarizer. Using wave-plate polarization rotation principle, consistent polarization laser output of four beams could be realized, PPLT was pumped to get high power 3 μm～5μm Mid-IR laser output. As the input current was 30 A and the Q-switched frequency was 10 kHz, the highest out power of 3.9 μm laser was 10.6 W, conversion efficiency of 1.06 μm 3. 9 μm laser was 9. 5%. Experiment results indicate that using double acousto-optic Q- switched technology and LD-side-pumped two-rod series connection technology, high repetition 1.06μm polarizer laser output of four beams can be realized, and pumping PPLT can gain high power 3.9 μm mid-infrared laser output.

关 键 词：双声光调Q 双棒串接 偏振旋光 中红外 

分 类 号：TN248[电子电信—物理电子学]