激光与光电子学进展, 2012, 49 (9): 091405, 网络出版: 2012-07-13  

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 305 nm
作者单位
长春理工大学光电工程学院, 吉林 长春 130022
摘要
报道了一种蓝光(471 nm)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2.5 W时,得到了最大212 mW的610 nm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11 mW的二次谐波305 nm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30 min内的不稳定度优于4.3%。采用USB-4000型光谱仪检测到输出为305 nm的激光光谱。
Abstract
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.
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倪天怡, 李永亮, 张天乙, 阮仁秋. 蓝光抽运Pr:KYF晶体及腔内倍频紫外激光技术[J]. 激光与光电子学进展, 2012, 49(9): 091405. Ni Tianyi, Li Yongliang, Zhang Tianyi, Ruan Renqiu. Blue Laser Pumped Intracavity Frequency Doubling Pr:KYF Ultraviolet Laser at 305 nm[J]. Laser & Optoelectronics Progress, 2012, 49(9): 091405.

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