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.
出处
《中国激光》
EI
CAS
CSCD
北大核心
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
