摘要
设计了四程泵浦的Yb:YAG薄片激光器。晶体掺杂原子数分数为10%,几何尺寸为直径10mm、厚340μm,提出了Cr/Au金属化方案,采用铟焊工艺将其焊接到微通道水冷热沉上。耦合系统为四程泵浦结构,球面镜规格为直径30 mm、曲率半径50 mm。利用LightTools软件模拟计算了泵浦光斑半径,选用曲率半径200 mm输出镜以使泵浦光斑半径与基模光斑半径比符合模式匹配原则。在激光二极管阵列泵浦功率为18.73 W时,获得了最高功率为4.81 W的1030nm连续激光输出,光-光转换效率为25.7%。
The laser diode array（LDA） pumped Yb：YAG thin disc laser has been analysed and optimized.The Yb：YAG disc with 10 mm diameter and 340 μm thickness was employed.The Yb3＋ atom fraction is 10%.It was mounted onto the micro-channel copper heat sink by Cr/Au/In.The four-pass optical coupling system was well designed with two spherical imaging mirrors which have a diameter of 30 mm and radius of curvature of 50 mm.The pump-beam radius was calculated by LightTools Software.Considering mode matching,the output mirror which has radius of curvature 200 mm was employed.When the incident power was 18.73 W,a CW output power of 4.81 W at 1 030 nm was obtained.The optical conversion efficiency was 25.7%.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2010年第11期2505-2509,共5页
High Power Laser and Particle Beams
基金
中国科学院创新基金项目
吉林省重点项目(20090346)
