摘要
通过实验研究了大芯径尺寸晶体波导被动调Q脉冲激光器的输出特性。采用芯径尺寸为320μm×400μm、原子数分数为1%的Yb∶YAG,包层尺寸为7 mm×30 mm、原子数分数为0.5%的Er∶YAG,长度为77 mm的单包层矩形晶体波导,以及可饱和吸收晶体为初始透过率85%的Cr^(4+)∶YAG,获得了被动调Q脉冲能量0.84 mJ@8.7 kHz,脉冲宽度为23.8 ns,光束质量M2=1.12×1.06。实验结果证明,大芯径尺寸晶体波导被动调Q脉冲激光器可获得近衍射极限高峰值功率脉冲输出。
The output characteristics of a passively Q-switched pulse laser with a large core size crystal waveguide are studied experimentally.Using Yb\:YAG with core size of 320μm×400μm and an atomic number fraction of 1%,Er\:YAG with cladding size of 7 mm×30 mm and an atomic number fraction of 0.5%,a single-clad rectangular crystal waveguide with a length of 77 mm,and a Cr^(4+)\:YAG saturable absorption crystal with initial transmittance of 85%,a passively Q-switched pulse energy of 0.84 mJ@8.7 kHz,a pulse width of 23.8 ns,and a beam quality of M^(2)=1.12×1.06 is obtained.Experimental results show that the high peak power pulse output with near diffraction-limit can be obtained by passively Q-switched pulse laser with large core diameter crystal waveguide.
作者
雷訇
刘奇
王煜
惠勇凌
朱占达
李强
Lei Hong;Liu Qi;Wang Yu;Hui Yongling;Zhu Zhanda;Li Qiang(Institute of Laser Engineering,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China;Beijing Engineering Research Center of Laser Technology,Beijing 100124,China;Beijing Colleges and Universities Engineering Research Center of Advanced Laser Manufacturing,Beijing 100124,China;Key Laboratory of Trans-Scale Laser Manufacturing Technology Ministry of Education,Beijing 100124,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2021年第12期131-137,共7页
Acta Optica Sinica
基金
国家自然科学基金(62075003)
北京市自然科学基金(4202007,KZ202110005010)。
关键词
激光器
全固态激光器
晶体波导
近衍射极限输出
被动调Q
lasers
solid-state laser
crystal waveguide
near diffraction-limit output
passively Q-switched
