大功率激光二极管抽运Nd:YVO_4激光器的特性研究  

Performance of a Laser-Diode Pumped High Efficient Nd∶YVO_4 Laser

作　　者：李健[1] 何京良[1] 侯玮[1] 吴星[1] 许祖彦[1] 

机构地区：[1]中国科学院物理研究所光物理实验室,北京100080

出　　处：《光学学报》2000年第4期484-488,共5页Acta Optica Sinica

基　　金：国家高技术研究发展计划资助项目

摘　　要：通过对 Nd:YVO4 晶体吸收特性的研究 ,对激光输出功率、斜效率与抽运功率的关系进行了理论分析 ,发现 Nd:YVO4 激光器在大功率激光二极管抽运的条件下 ,激光斜效率随抽运功率的增加而减小 ,实验表明 ,理论结果与实验符合得较好。选用 Nd3 + 掺杂的原子数分数为 0 .5%、通光长度为 5mm的 Nd:YVO4 晶体 ,在抽运功率为 5W左右时 ,输出功率为 3W左右时 ,获得了 71.5%的激光斜效率。The absorption characteristics of the Nd∶YVO 4 crystal and the relations between the laser output power or the slope efficiency and the input power are studied. It is found that the slope efficiency of Nd∶YVO 4 laser dropped with the input power raised under the condition of a high power pumped. The average slope efficiency of 71.5% is obtained with a Nd∶YVO 4 crystal of 0.5% dopped concentration x and pumped by about 5 W, the output power of the laser is about 3 W.

关 键 词：大功率 高效率 激光二极管 ND:YVO4 激光器 

分 类 号：TN248.1[电子电信—物理电子学]