双端泵Nd:YVO_4固体激光器泵浦的高功率光参量振荡器  

PPMgLN-based high power OPO pumped by double end pumped Nd:YVO_4 laser

作　　者：边莎莎[1] 吴波[1] 孔剑[1] 沈永行[1] 

机构地区：[1]浙江大学光电信息工程学系现代光学仪器国家重点实验室,浙江杭州310027

出　　处：《红外与激光工程》2012年第3期639-642,共4页Infrared and Laser Engineering

基　　金：国家自然科学基金(60778001)

摘　　要：报道了基于双端泵Nd:YVO4固体脉冲激光器泵浦的基于周期性畴极化反转氧化镁掺杂铌酸锂晶体(PPMgLN)的光参量振荡器(OPO)。双端泵Nd:YVO4固体脉冲激光器采用激光二极管作为双端泵浦源,在25 kHz重频下获得了平均功率为23.5 W的1064 nm近基模线偏振激光输出。使用该激光器泵浦一个基于PPMgLN的OPO,获得了平均功率为3.54 W的3.83μm中红外激光输出。OPO的斜率效率为65.2%,其中,从1.064μm到3.83μm的斜率效率为18.1%。该系统结构十分紧凑、成本低、实用性强,在4 h内的稳定度小于4%,具有较高的应用价值。A PPMgLN-based optical parametric oscillator（OPO） pumped by a double end pumped Nd：YVO4 laser for high power laser output at 3.83 μm was reported.With two fiber pigtailed laser diodes for double end pumping,the Nd：YVO4 laser delivered a linearly polarized pulsed emission output at 1 064 nm with an average power of 23.5 W at a repetition rate of 25 kHz.With the Nd：YVO4 laser as the pump source,a PPMgLN-based OPO was developed and a mid-infrared laser output of 3.54 W at 3.83 μm was obtained.The total slope efficiency was 65.2%,and the slope efficiency from the 1.064 μm to 3.83 μm conversion was 18.1%.This system features a tight structure,relatively low cost and strong practicability.It can work stably with a power variation less than 4% within 4 hours.

关 键 词：ND:YVO4激光器 光参量振荡器 周期性畴极化反转掺镁铌酸锂晶体 中波红外激光器 

分 类 号：O437.4[机械工程—光学工程]