摘要
以新型可饱和吸收体 Cr4 +∶ YAG晶体作为调 Q开关 ,在平 -凸非稳腔和平 -平介稳腔中实现被动调 Q运转 .分别获得能量为 70 .5m J和 2 9.7m J,脉宽为 2 3ns和 2 0 ns,能量起伏为 1.9%和 3.8%的调 Q单脉冲输出 .实验结果表明 ,非稳腔有利于输出能量和稳定性的提高 ,理论分析和实验结果相符 .
By using a new saturable absorber Cr 4+ ∶YAG crystal as Q modulated switch, passively Q modulated operation is realized in a plane convex unstable resonator and a plane plane critical stable resonator. The Q modulated single pulse output with energy of 70.5 mJ and 29.7 mJ, pulse width of 23 ns and 20 ns, and energy fluctuations of 1.9% and 3.8% are obtained respectively.As shown by experimental results, unstable resonator is beneficial to the enhancement of output energy and stability. Theoretical analysis is in agreement with experimental results.
出处
《华侨大学学报(自然科学版)》
CAS
2000年第3期239-242,共4页
Journal of Huaqiao University(Natural Science)
基金
福建省自然科学基金资助项目
福建省优秀留学回国人员科研资助项目
关键词
YAG
调Q激光器
非稳腔结构
铬
Cr 4+ ∶YAG, Q switched laser, unstable resonator