880nm同带泵浦的高效率Nd:YVO_4自拉曼激光器（英文）  

High efficiency actively Q-switched Nd:YVO_4 self-Raman laser under 880 nm in-band pumping

作　　者：丁欣[1,2] 张巍[1,2] 刘俊杰[3] 盛泉[1,2] 李斌[1,2] 刘简[1,2] 姜鹏波[1,2] 孙冰[1,2] 赵岑[1,2] 姚建铨[1,2] 

机构地区：[1]天津大学精密仪器与光电子工程学院激光与光电子研究所,天津300072 [2]光电信息技术教育部重点实验室,天津300072 [3]天津津航技术物理研究所,天津300308

出　　处：《红外与激光工程》2016年第1期77-82,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(61178028;61405141);天津市应用基础与前沿技术研究计划(15JCQNJC02500)

摘　　要：利用880 nm半导体激光器同带泵浦声光调Q Nd:YVO4自拉曼激光器,以减轻热效应对泵浦功率的限制和对拉曼增益的影响,获得高效的1 176 nm一阶斯托克斯光输出。使用两块长度10 mm的Nd:YVO4晶体作为增益介质,脉冲重复频率190 k Hz时,在26.8 W入射泵浦功率下获得6.11 W的平均输出功率,光光转换效率22.8%。实验研究了拉曼增益介质长度对输出功率和转换效率的影响,并对自拉曼激光器输出功率曲线中出现凹陷的原因进行分析,认为凹陷并非源自谐振腔稳定性,而是由于增益较弱的斯托克斯光对于谐振腔失调的敏感性所致。对照试验结果显示,与808 nm传统泵浦方式相比,880 nm同带泵浦下自拉曼激光器的输出功率和转换效率得到明显提高。An efficient acousto-optic Q-switched Nd：YVO4 self-Raman laser in-band pumped at 880 nm was demonstrated. Using two 10-mm-long Nd：YVO4 crystals as gain medium, 6.11 W of average output power at 1 176 nm Stokes wavelength was obtained under the incident pump power of 26.8 W and a high pulse repetition rate of 190 kHz, corresponding optical efficiency was 22.8%. The influence of Raman- gain-length on conversion efficiency was investigated in the experiment and the dips on Stokes output power was also discussed. Control experiment of the self-Raman laser under 808 nm traditional pumping shows that in-band pumping help improve the conversion efficiency and maximum output power greatly.

关 键 词：自拉曼激光器 同带泵浦 ND:YVO4激光器 

分 类 号：TN248.1[电子电信—物理电子学]