部分端面抽运混合腔Nd∶YVO_4板条激光器实验研究  

Experimental study of partially end-pumped Nd∶YVO_4 slab laser with hybrid resonator operation

作　　者：王宁[1] 陆雨田[2] 李晓莉[2] 焦志勇[1] 

机构地区：[1]中国石油大学(华东)物理科学与技术学院,东营257061 [2]中国科学院上海光学精密机械研究所,上海201800

出　　处：《激光技术》2008年第2期125-127,共3页Laser Technology

摘　　要：为了获得大功率高光束质量的激光输出,利用自制的5bar激光二极管阵列堆作为抽运源,抽运光经波导整形系统整形后入射至晶体,采用柱面镜混合腔结构,对部分端面抽运的混合腔Nd∶YVO4板条激光器进行了实验研究。在最高抽运功率134W时,得到了38W的连续激光输出,斜效率44%,测得的两个方向的M2因子为1.56和1.78。实验结果表明,该激光器具有极佳的热效应,能够在高功率运转时保持高光束质量的激光输出,输入-输出功率曲线没有出现平顶或弯曲的迹象,该激光器仍有提升潜力,本结果有助于进一步提升该激光器的性能,实现更高功率的高光束质量激光输出。To attain high power laser with high beam quality, experiments were performed for partially end-pumped Nd：YVO4 slab laser. With the help of a self-assembly 5bar LD array stack and the wave-guide beam reshaping system,the pumped light was coupled into slab crystal. 38W CW laser beam was attained with hybrid resonator operation when pumped power was 134W, and the slope efficiency was 44% . When the output laser power was 38W, M^2 value in unstable resonator direction was 1. 56, and M^2 value in stable resonator direction was 1.78. The experimental results indicated that high power laser could be attained with high beam quality, concerning with good thermal effect. The input-output power curve was not flat-topping and reflexed. The experiment results indicated that this laser could be improved more.

关 键 词：激光器 部分端面抽运 混合腔 光束质量 板条 

分 类 号：TN248.1[电子电信—物理电子学]