680mW小型薄片式Yb:YAG/BIBO 515nm激光器  

A Compact Efficient Intra-Cavity Frequency Doubled Yb:YAG/BIBO 515 nm Thin Disc Laser

作　　者：田玉冰[1] 檀慧明[1] 王帆[1] 崔锦江[1] 董宁宁[1] 姚文明[1,2] 邬幸富[1,3] 

机构地区：[1]中国科学院苏州生物医学工程技术研究所,江苏苏州215163 [2]中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春130033 [3]长春理工大学理学院,吉林长春130022

出　　处：《中国激光》2013年第6期145-149,共5页Chinese Journal of Lasers

基　　金：江苏省自然科学基金面上项目(BK2010235);苏州市应用基础研究计划项目(SYG201127);苏州医工所青年引导基金(Y052051205)资助课题

摘　　要：报道了腔内倍频Yb:YAG/BIBO 515nm薄片激光器,Yb:YAG晶体掺杂浓度(原子数分数)为10%,几何尺寸为11mm×420μm,高反面经Cr/Au金属化处理后,采用铟焊工艺焊接到微通道水冷热沉上。理论上计算了抽运光吸收效率和注入光斑半径。耦合系统为四程抽运结构,球面镜规格为直径=26mm,曲率半径ρ=50mm,倍频晶体选用按Ⅰ类临界相位匹配角度切割的BIBO,相位匹配角度(θ,Φ)=(166.7°,90°)。在24.9 W注入抽运功率下,515nm激光最高输出功率可达680mW,光-光转换效率为2.73%。An intra-cavity frequency doubled Yb： YAG/BIBO 515 nm thin disc laser is demonstrated. The Yb： YAG crystal with 10 % doped concentration is 420 μm in thickness and 11 mm in diameter. It is mounted onto the micro- channel copper heat sink by Cr/Au/In. The pump light absorption and pump beam radius are calculated. A four-pass optical coupling system is well designed with two spherical imaging mirrors with diameter of 26 mm and curvature radius of 50 mm. A 3 mm× 3 mm × 2 mm BIBO crystal cutting at a type-Ⅰ phase-matching direction of （θ,Ф）=（166.7°,90°） is employed. With 24.9 W incident pumping power, the maximum output power of 680 mW at 515 nm is obtained. The optical-optical conversion efficiency is 2.73 %.

关 键 词：激光器 薄片激光器 YB YAG晶体 515 nm绿激光 

分 类 号：TN248.1[电子电信—物理电子学]