蓝光抽运Pr∶KYF晶体及腔内倍频紫外激光技术  

Blue Laser Pumped Intracavity Frequency Doubling Pr∶KYF Ultraviolet Laser at 305nm

作　　者：倪天怡[1] 李永亮[1] 张天乙[1] 阮仁秋[1] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022

出　　处：《激光与光电子学进展》2012年第9期128-131,共4页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61108029)资助课题

摘　　要：报道了一种蓝光(471nm)抽运的全固态Pr∶KYF激光器。其入射抽运激光阈值功率为0.4 W,当注入的抽运功率为2.5W时,得到了最大212mW的610nm波长的激光输出。然后采用I类临界相位匹配的β-BaB2O4(BBO)晶体进行内腔倍频,得到了最大11mW的二次谐波305nm紫外激光输出。通过刀口法可测量到在TEM00模式下,输出光束的质量因子M2=1.25;光-光转换效率达4.4%;输出功率在30min内的不稳定度优于4.3%。采用USB-4000型光谱仪检测到输出为305nm的激光光谱。An all-solid-state blue laser（471 nm） pumped Pr∶KYF laser is demonstrated.The incident pump power threshold is 0.4 W.With an incident pump power of 2.5 W,the maximum output power is 212 mW.Moreover,intracavity second-harmonic generation（SHG） is also achieved with a maximum ultraviolet power of 11 mW by using a β-BaB2O4（BBO） nonlinear crystal.The system emits nearly TEM00 mode with beam quality factor M2=1.25 measured by the knife-edge technique.The optical-to-optical conversion efficiency is 4.4%,and the fluctuation of the output power is about 4.3% in 30 min.The spectra of 305 nm laser are detected using the USB-4000 high resolution spectrometer.

关 键 词：激光 蓝光抽运 内腔倍频 Pr∶KYF晶体 

分 类 号：TN248.1[电子电信—物理电子学]