摘要
通过抽运结构的优化设计，对YAG晶体的轴向吸收系数非均匀特性进行了补偿，实现了直径15mmNd：YAG晶体的轴向高均匀抽运。分析了轴向非均匀晶体吸收系数的影响，提出在控制抽运光中心波长的基础上，通过改变结构参数来补偿轴向吸收系数不均匀导致的抽运不均匀的方法。实验验证了轴向吸收系数为2．343～2．882cm^-1的Nd：YAG棒的均匀抽运优化方案。
By optimizing the pump structure, the axially non-uniform absorption coefficient of YAG crystal is compensated. A 15 mm diameter Nd ： YAG crystal is uniformly pumped. The effect of axially non-uniform absorption coefficient of Nd： YAG on the uniform pumping is analyzed. Then a new method that can optimize the gain distribution through the modulation of the distance and the central pump wavelength is given. A side-pumped amplifier structure is designed to verify the simulation results by experiment. The scheme used for obtaining uniform gain distribution for Nd ： YAG rod with axially absorption coefficient with range of 2.343-2.882 cm-1 has been proved experimentally.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2015年第6期8-15,共8页
Chinese Journal of Lasers
基金
中国科学院科研装备研制项目(YZ201216)
国家重大科研装备研制项目(ZDYZ2013-2)
