高平均功率室温运转闪光灯抽运Cr：Tm：Ho：YAG激光器  

High Average Power Flashlamp-Pumped Cr : Tm : Ho : YAG Laser at Room Temperature

作　　者：龙井宇[1] 刘沛沛[1] 杨凯[1] 郑新亮[1,2] 任兆玉[1,3] 白晋涛[1,2,3] 

机构地区：[1]西北大学光子学与光子技术研究所 [2]西北大学物理学系,陕西西安710069 [3]陕西省全固态激光及应用工程技术研究中心,陕西西安710069

出　　处：《中国激光》2009年第5期1037-1041,共5页Chinese Journal of Lasers

基　　金：陕西省全固态激光及应用工程技术研究中心(ZDGC-19)资助项目

摘　　要：报道了氙灯抽运的2.1μmCr:Tm:Ho:YAG激光器。室温下Cr:Tm:Ho:YAG为准三能级系统,振荡阈值高,掺杂离子间存在复杂的能量转移过程。采用优化掺杂浓度配比的激光晶休,长脉冲抽运,实现了室温下2.1μm波长激光输出。采用了高漫反射陶瓷聚光腔,对有效抽运光谱带的反射率高达95%。冷却水温15℃条件下,重复频率10 Hz,获得最大平均功率23.5 W;重复频率5 Hz,获得最大激光脉冲能量2.58J,最大斜率效率4.3%。A xenon flashlamp-pumped Cr ： Tm ： Ho ： YAG laser operating at 2.1 μm is demonstrated. Since the Cr ： Tm ： Ho ： YAG has a high threshold owing to its quasi-three-level nature and the complex energy transfer process between the doped ions, optimum ions concentration proportion and long pulse pumping are employed to achieve the 2.1-μm laser operating at room temperature. The ceramic pumping cavity with high diffuse reflectivity of 95% for effective pump band is used. With the cooling water temperature of 15 ℃, the maximum laser average power is 23.5 W at 10-Hz repetition frequency, and the maximum laser pulse energy is 2.58 J with a maximum slope efficiency of 4.3 % at 5 Hz.

关 键 词：激光技术 Cr:Tm:Ho:YAG激光器 氙灯抽运 准三能级 

分 类 号：TN248.1[电子电信—物理电子学]