中国物理B ›› 2019, Vol. 28 ›› Issue (11): 114208-114208.doi: 10.1088/1674-1056/ab4ce0
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
Xu-Yao Zhao(赵绪尧), Dun-Lu Sun(孙敦陆), Jian-Qiao Luo(罗建乔), Hui-Li Zhang(张会丽), Zhong-Qing Fang(方忠庆), Cong Quan(权聪), Lun-Zhen Hu(胡伦珍), Zhi-Yuan Han(韩志远), Mao-Jie Cheng(程毛杰), Shao-Tang Yin(殷绍唐)
Xu-Yao Zhao(赵绪尧)1,2, Dun-Lu Sun(孙敦陆)1, Jian-Qiao Luo(罗建乔)1, Hui-Li Zhang(张会丽)1, Zhong-Qing Fang(方忠庆)1,2, Cong Quan(权聪)1,2, Lun-Zhen Hu(胡伦珍)1,2, Zhi-Yuan Han(韩志远)1,2, Mao-Jie Cheng(程毛杰)1, Shao-Tang Yin(殷绍唐)1
摘要: A comparative study on the laser performance between bonding and non-bonding Er,Pr:GYSGG rods side-pumped by 970-nm laser diodes (LDs) is conducted for the thermal lensing compensation. The analyses of the thermal distribution and thermal focal length show that the bonding rod possesses a high cooling efficiency and weak thermal lensing effect compared with the conventional Er,Pr:GYSGG rod. Moreover, the laser characteristics of maximum output power, slope efficiency, and laser beam quality of the bonding rod with concave end-faces operated at 2.79 μm are improved under the high-repetition-rate operation. A maximum output power of 13.96 W is achieved at 150-Hz and 200-μs pulse width, corresponding to a slope efficiency of 17.7% and an electrical-to-optical efficiency of 12.9%. All results suggest that the combination of thermal bonding and concave end-face is a suitable structure for thermal lensing compensation.
中图分类号: (Laser spectroscopy)